those_o small_a parcel_n be_v make_v so_o glow_v hot_a that_o it_o be_v melt_v into_o a_o vitrum_fw-la which_o by_o the_o ambient_fw-la air_n be_v thrust_v into_o the_o form_n of_o a_o ball._n a_o five_o thing_n which_o i_o think_v worth_a examination_n be_v whether_o the_o motion_n of_o all_o kind_n of_o spring_n may_v not_o be_v reduce_v to_o the_o principle_n whereby_o the_o include_v heterogeneous_a fluid_n seem_v to_o be_v move_v or_o to_o that_o whereby_o two_o solid_n as_o marble_n or_o the_o like_a be_v thrust_v and_o keep_v together_o by_o the_o ambient_fw-la fluid_fw-la a_o six_o thing_n be_v whether_o the_o rise_n and_o ebullition_n of_o the_o water_n out_o of_o spring_n and_o fountain_n which_o lie_v much_o high_a from_o the_o centre_n of_o the_o earth_n than_o the_o superficies_n of_o the_o sea_n from_o whence_o it_o seem_v to_o be_v derive_v may_v not_o be_v explicate_v by_o the_o rise_n of_o water_n in_o a_o small_a pipe_n for_o the_o sea-water_n be_v strain_v through_o the_o pore_n or_o cranny_n of_o the_o earth_n be_v as_o it_o be_v include_v in_o little_a pipe_n where_o the_o pressure_n of_o the_o air_n have_v not_o so_o great_a a_o power_n to_o resist_v its_o rise_n but_o examine_v this_o way_n and_o find_v in_o it_o several_a difficulty_n almost_o irremovable_a i_o think_v upon_o a_o way_n that_o will_v much_o more_o natural_o and_o conceivable_o explain_v it_o which_o be_v by_o this_o follow_a experiment_n i_o take_v a_o glass-tube_n of_o the_o form_n of_o that_o describe_v in_o the_o six_o figure_n and_o choose_v two_o heterogeneous_a fluid_n such_o as_o water_n and_o oil_n i_o pour_v in_o as_o much_o water_n as_o fill_v up_o the_o pipe_n as_o high_a as_o ab_fw-la then_o put_v in_o some_o oil_n into_o the_o tube_n ac_fw-la i_o depress_v the_o superficies_n a_o of_o the_o water_n to_o e_o and_o by_o raise_v to_o g_o which_o be_v not_o so_o high_a perpendicular_o as_o the_o superficies_n of_o the_o oil_n f_o by_o the_o space_n fi_n wherefore_o the_o proportion_n of_o the_o gravity_n of_o these_o two_o liquor_n be_v as_o gh_v to_o fe_o this_o experiment_n i_o try_v with_o several_a other_o liquor_n and_o particular_o with_o fresh_a water_n and_o salt_n which_o i_o make_v by_o dissolve_v salt_n in_o warm_a water_n which_o two_n though_o they_o be_v nothing_o heterogeneous_a yet_o before_o they_o will_v perfect_o mix_v one_o with_o another_o i_o make_v trial_n of_o the_o experiment_n nay_o let_v the_o tube_n wherein_o i_o try_v the_o experiment_n remain_v for_o many_o day_n i_o observe_v they_o not_o to_o mix_v but_o the_o superficies_n of_o the_o fresh_a be_v rather_o more_o than_o less_o elevate_v above_o that_o of_o the_o salt_n now_o the_o proportion_n of_o the_o gravity_n of_o sea-water_n to_o that_o of_o riverwater_n according_a to_o stevinus_n and_o varenius_n and_o as_o i_o have_v since_o find_v pretty_a true_a by_o make_v trial_n myself_o be_v as_o 46._o to_o 45._o that_o be_v 46._o ounce_n of_o the_o salt_n water_n will_v take_v up_o no_o more_o room_n than_o 45._o of_o the_o fresh_a or_o reciprocal_o 45_o pint_n of_o salt-water_n weigh_v as_o much_o as_o 46_o of_o fresh_a but_o i_o find_v the_o proportion_n of_o brine_n to_o fresh_a water_n to_o be_v near_o 13_o to_o 12_o suppose_v therefore_o ghm_n to_o represent_v the_o sea_n and_o fi_n the_o height_n of_o the_o mountain_n above_o the_o superficies_n of_o the_o sea_n fm_n a_o cavern_n in_o the_o earth_n begin_v at_o the_o bottom_n of_o the_o sea_n and_o terminate_v at_o the_o top_n of_o the_o mountain_n lm_o the_o sand_n at_o the_o bottom_n through_o which_o the_o water_n be_v as_o it_o be_v strain_v so_o as_o that_o the_o fresh_a part_n be_v only_o permit_v to_o transude_v and_o the_o saline_n keep_v back_o if_o therefore_o the_o proportion_n of_o gm_n to_o fm_n be_v as_o 45_o to_o 46_o then_o may_v the_o cylinder_n of_o salt-water_n gm_n make_v the_o cylinder_n of_o freshwater_n to_o rise_v as_o high_a as_o e_z and_o to_o run_v over_o at_o n._n i_o can_v here_o stand_v to_o examine_v or_o confute_v their_o opinion_n who_o make_v the_o depth_n of_o the_o sea_n below_o its_o superficies_n to_o be_v no_o more_o perpendicular_o measure_v then_o the_o height_n of_o the_o mountain_n above_o it_o it_o be_v enough_o for_o i_o to_o say_v there_o be_v no_o one_o of_o those_o that_o have_v assert_v it_o have_v experimental_o know_v the_o perpendicular_a of_o either_o nor_o shall_v i_o here_o determine_v whether_o there_o may_v not_o be_v many_o other_o cause_n of_o the_o separation_n of_o the_o fresh_a water_n from_o the_o salt_n as_o perhaps_o some_o part_n of_o the_o earth_n through_o which_o it_o be_v to_o pass_v may_v contain_v a_o salt_n that_o mix_v and_o unite_n with_o the_o sea-salt_n may_v precipitate_v it_o much_o after_o the_o same_o manner_n as_o the_o alkalizate_n and_o acid_n salt_n mix_v and_o precipitate_v each_o other_o in_o the_o preparation_n of_o tartarum_fw-la vitriolatum_fw-la i_o know_v not_o also_o whether_o the_o exceed_a cold_a that_o must_v necessary_o be_v at_o the_o bottom_n of_o the_o water_n may_v not_o help_v towards_o this_o separation_n for_o we_o find_v that_o warm_a water_n be_v able_a to_o dissolve_v and_o contain_v more_o salt_n than_o the_o same_o cold_a insomuch_o that_o brines_n strong_o impregnate_v by_o heat_n if_o let_v cool_a do_v suffer_v much_o of_o their_o salt_n to_o subside_n and_o crystallize_v about_o the_o bottom_n and_o side_n i_o know_v not_o also_o whether_o the_o exceed_a pressure_n of_o the_o part_n of_o the_o water_n one_o against_o another_o may_v not_o keep_v the_o salt_n from_o descend_v to_o the_o very_a bottom_n as_o find_v little_a or_o no_o room_n to_o insert_v itself_o between_o those_o part_n protrude_v so_o violent_o together_o or_o else_o squeeze_v it_o upward_o into_o the_o superior_a part_n of_o the_o sea_n where_o it_o may_v more_o easy_o obtain_v room_n for_o itself_o among_o the_o part_n of_o the_o water_n by_o reason_n that_o there_o be_v more_o heat_n and_o less_o pressure_n to_o this_o opinion_n i_o be_v somewhat_o the_o more_o induce_v by_o the_o relation_n i_o have_v meet_v with_o in_o geograhical_a writer_n of_o draw_v fresh_a water_n from_o the_o bottom_n of_o the_o sea_n which_o be_v salt_n above_o i_o can_v now_o stand_v to_o examine_v whether_o this_o natural_a perpetual_a motion_n may_v not_o artificial_o be_v imitate_v nor_o can_v i_o stand_v to_o answer_v the_o objection_n which_o may_v be_v make_v against_o this_o my_o supposition_n as_o first_o how_o it_o come_v to_o pass_v that_o there_o be_v sometime_o salt_n spring_v much_o high_a than_o the_o superficies_n of_o the_o water_n and_o second_o why_o spring_n do_v not_o run_v fast_o and_o slow_a according_a to_o the_o vary_a height_n make_v of_o the_o cylinder_n of_o sea-water_n by_o the_o ebb_a and_o flow_v of_o the_o sea_n as_o to_o the_o first_o in_o short_a i_o say_v the_o fresh_a water_n may_v receive_v again_o a_o saline_a tincture_n near_o the_o superficies_n of_o the_o earth_n by_o pass_v through_o some_o salt_n mine_n or_o else_o many_o of_o the_o saline_a part_n of_o the_o sea_n may_v be_v keep_v back_o though_o not_o all_o and_o as_o to_o the_o second_o the_o same_o spring_n may_v be_v feed_v and_o supply_v by_o divers_a cavern_n come_v from_o very_o far_o distant_a part_n of_o the_o sea_n so_o as_o that_o it_o may_v in_o one_o place_n be_v high_a in_o another_o low_a water_n and_o so_o by_o that_o mean_v the_o spring_n may_v be_v equal_o supply_v at_o all_o time_n or_o else_o the_o cavern_n may_v be_v so_o straight_o and_o narrow_a that_o the_o water_n not_o have_v so_o ready_a and_o free_a passage_n through_o it_o can_v upon_o so_o short_a and_o quick_a mutation_n of_o pressure_n be_v able_a to_o produce_v any_o sensible_a effect_n at_o such_o a_o distance_n beside_o that_o to_o confirm_v this_o hypothesis_n there_o be_v many_o example_n find_v in_o natural_a historian_n of_o spring_n that_o do_v ebb_n and_o flow_v like_o the_o sea_n as_o particular_o those_o record_v by_o the_o learned_a camden_n and_o after_o he_o by_o speed_n to_o be_v find_v in_o this_o island_n one_o of_o which_o they_o relate_v to_o be_v on_o the_o top_n of_o a_o mountain_n by_o the_o small_a village_n kilken_a in_o flintshire_n maris_fw-la aemulus_fw-la qui_fw-la statis_fw-la temporibus_fw-la svas_fw-la evomit_fw-la &_o resorbet_fw-la aquas_fw-la which_o at_o certain_a time_n rise_v and_o fall_v after_o the_o manner_n of_o the_o sea_n a_o second_o in_o caermardenshire_n near_o caermarden_n at_o a_o place_n call_v cantre_v bichan_n qui_n ut_fw-la scribit_fw-la giraldus_n naturali_fw-la die_fw-la â—is_fw-la undis_fw-la deficiens_fw-la &_o toties_fw-la exuberans_fw-la marinos_fw-la imitatur_fw-la instabilitates_fw-la that_o twice_o in_o four_o and_o twenty_o hour_n
the_o water_n can_v very_o little_a or_o not_o at_o all_o penetrate_v this_o therefore_o retain_v always_o very_a near_o the_o same_o dimension_n and_o the_o other_o stretch_v and_o shrink_v according_a as_o there_o be_v more_o or_o less_o moisture_n or_o water_n in_o its_o pore_n by_o reason_n of_o the_o make_v and_o shape_n of_o the_o part_n the_o whole_a body_n must_v necessary_o unwreath_v and_o wreathe_v itself_o and_o upon_o this_o principle_n it_o be_v very_o easy_a to_o make_v several_a sort_n of_o contrivance_n that_o shall_v thus_o wreathe_v and_o unwreath_v themselves_o either_o by_o heat_n and_o cold_a or_o by_o dryness_n and_o moisture_n or_o by_o any_o great_a or_o less_o force_v from_o whatever_o cause_n it_o proceed_v whether_o from_o gravity_n or_o weight_n or_o from_o wind_n which_o be_v motion_n of_o the_o air_n or_o from_o some_o spring_a body_n or_o the_o like_a this_o have_v i_o time_n i_o shall_v enlarge_v much_o more_o upon_o for_o it_o seem_v to_o i_o to_o be_v the_o very_a first_o footstep_n of_o sensation_n and_o animate_v motion_n the_o most_o plain_a simple_a and_o obvious_a contrivance_n that_o nature_n have_v make_v use_n of_o to_o produce_v a_o motion_n next_o to_o that_o of_o rarefaction_n and_o condensation_n by_o heat_n and_o cold_a and_o be_v this_o principle_n very_o well_o examine_v i_o be_o very_o apt_a to_o think_v it_o will_v afford_v we_o a_o very_a great_a help_n to_o find_v out_o the_o mechanism_n of_o the_o muscle_n which_o indeed_o as_o far_o as_o i_o have_v hitherto_o be_v able_a to_o examine_v seem_v to_o i_o not_o so_o very_o perplex_v as_o one_o may_v imagine_v especial_o upon_o the_o examination_n which_o i_o make_v of_o the_o muscle_n of_o crab_n lobster_n and_o several_a sort_n of_o large_a shellfish_n and_o compare_v my_o observation_n on_o they_o with_o the_o circumstance_n i_o observe_v in_o the_o muscle_n of_o terrestrial_a animal_n now_o as_o in_o this_o instance_n of_o the_o beard_n of_o a_o wild_a oat_n we_o see_v there_o be_v nothing_o else_o requisite_a to_o make_v it_o wreath_n and_o unwreath_v itself_o and_o to_o straighten_v and_o bend_v its_o knee_n then_o only_o a_o little_a breath_n of_o moist_a or_o dry_a air_n or_o a_o small_a atom_n almost_o of_o water_n or_o liquor_n and_o a_o little_a heat_n to_o make_v it_o again_o evaporate_v for_o by_o hold_v this_o beard_n place_v and_o fix_v as_o i_o before_o direct_v near_o a_o fire_n and_o dip_v the_o tip_n of_o a_o small_a shred_n of_o paper_n in_o well_o rectify_v spirit_n of_o wine_n and_o then_o touch_v the_o wreathe_v cylindrical_a part_n you_o may_v perceive_v it_o to_o untwist_v itself_o and_o present_o again_o upon_o the_o avolation_n of_o the_o spirit_n by_o the_o great_a heat_n it_o will_v re-twist_n itself_o and_o thus_o will_v it_o move_v forward_o and_o backward_o as_o oft_o as_o you_o repeat_v the_o touch_v it_o with_o the_o spirit_n of_o wine_n so_o may_v perhaps_o the_o shrink_a and_o relax_v of_o the_o muscle_n be_v by_o the_o influx_n and_o evaporation_n of_o some_o kind_n of_o liquor_n or_o juice_n but_o of_o this_o enquiry_n i_o shall_v add_v more_o elsewhere_o obseru._n xxviii_o of_o the_o seed_n of_o venus_n looking-glass_n or_o corn_n violet_n from_o the_o leave_n and_o down_n and_o beard_n of_o plant_n we_o come_v at_o last_o to_o the_o seed_n and_o here_o indeed_o seem_v to_o be_v the_o cabinet_n of_o nature_n wherein_o be_v lay_v up_o its_o jewel_n the_o providence_n of_o nature_n about_o vegetable_n be_v in_o no_o part_n manifest_v more_o then_o in_o the_o various_a contrivance_n about_o the_o seed_n nor_o indeed_o be_v there_o in_o any_o part_n of_o the_o vegetable_a so_o curious_a carving_n and_o beautiful_a adornment_n as_o about_o the_o seed_n this_o in_o the_o large_a sort_n of_o seed_n be_v most_o evident_a to_o the_o eye_n nor_o be_v it_o less_o manifest_a through_o the_o microscope_n in_o those_o seed_n who_o shape_n and_o structure_n by_o reason_n of_o their_o smallness_n the_o eye_n be_v hardly_o able_a to_o distinguish_v of_o these_o there_o be_v multitude_n many_o of_o which_o i_o have_v observe_v through_o a_o microscope_n and_o find_v that_o they_o do_v for_o the_o most_o part_n every_o one_o afford_v exceed_v pleasant_a and_o beautiful_a object_n for_o beside_o those_o that_o have_v various_a kind_n of_o carve_v surface_n there_o be_v other_o that_o have_v smooth_a and_o perfect_o polish_a surface_n other_o a_o downy_a hairy_a surface_n some_o be_v cover_v only_o with_o a_o skin_n other_o with_o a_o kind_n of_o shell_n other_o with_o both_o as_o be_v observable_a also_o in_o great_a seed_n schem_n xvii_o schem_n xviii_o this_o though_o it_o appear_v one_o of_o the_o most_o promise_a seed_n for_o beauty_n to_o the_o naked_a eye_n yet_o through_o the_o microscope_n it_o appear_v but_o a_o rude_a misshape_a seed_n which_o i_o therefore_o draw_v that_o i_o may_v thereby_o manifest_v how_o unable_a we_o be_v by_o the_o naked_a eye_n to_o judge_v of_o beauteous_a or_o less_o curious_a microscopical_a object_n cut_v some_o of_o they_o in_o sunder_o i_o observe_v they_o to_o be_v fill_v with_o a_o greenish_a yellow_a pulp_n and_o to_o have_v a_o very_a thick_a husk_n in_o proportion_n to_o the_o pulp_n obseru._n xxix_o of_o the_o seed_n of_o time_n these_o pretty_a fruit_n here_o represent_v in_o the_o 18._o scheme_n be_v nothing_o else_o but_o nine_o several_a seed_n of_o time_n they_o be_v all_o of_o they_o in_o differ_v posture_n both_o as_o to_o the_o eye_n and_o the_o light_n nor_o be_v they_o all_o of_o they_o exact_o of_o the_o same_o shape_n there_o be_v a_o great_a variety_n both_o in_o the_o bulk_n and_o figure_n of_o each_o seed_n but_o they_o all_o agree_v in_o this_o that_o be_v look_v on_o with_o a_o microscope_n they_o each_o of_o they_o exact_o resemble_v a_o lemon_n or_o orange_n dry_v and_o this_o both_o in_o shape_n and_o colour_n some_o of_o they_o be_v a_o little_o round_a of_o the_o shape_n of_o a_o orange_n as_o a_o and_o b_o they_o have_v each_o of_o they_o a_o very_a conspicuous_a part_n by_o which_o they_o be_v join_v to_o their_o little_a stalk_n and_o one_o of_o they_o have_v a_o little_a piece_n of_o stalk_n remain_v on_o the_o opposite_a side_n of_o the_o seed_n you_o may_v perceive_v very_o plain_o by_o the_o figure_n be_v very_o cop_v and_o prominent_a as_o be_v very_o usual_a in_o lemon_n which_o prominency_n be_v express_v in_o d_o e_z and_o f._n they_o seem_v each_o of_o they_o a_o little_a crease_v or_o wrinkle_a but_o e_z be_v very_o conspicuous_o furrow_v as_o if_o the_o inward_a make_v of_o this_o seed_n have_v be_v somewhat_o like_o that_o of_o a_o lemon_n also_o but_o upon_o divide_v several_a seed_n with_o a_o very_a sharp_a penknife_n and_o examine_v they_o afterward_o i_o find_v their_o make_n to_o be_v in_o nothing_o but_o bulk_n differ_v from_o that_o of_o pea_n that_o be_v to_o have_v a_o pretty_a thick_a coat_n and_o all_o the_o rest_n a_o indifferent_a white_a pulp_n which_o seem_v very_o close_o so_o that_o it_o seem_v nature_n do_v not_o very_o much_o alter_v her_o method_n in_o the_o manner_n of_o enclose_v and_o preserve_v the_o vital_a principle_n in_o the_o seed_n in_o these_o very_a small_a grain_n from_o that_o of_o bean_n pea_n etc._n etc._n the_o grain_n afford_v a_o very_a pretty_a object_n for_o the_o microscope_n namely_o a_o dish_n of_o lemon_n place_v in_o a_o very_a little_a room_n shall_v a_o lemon_n or_o nut_n be_v proportionable_o magnify_v to_o what_o this_o seed_n of_o time_n be_v it_o will_v make_v it_o appear_v as_o big_a as_o a_o large_a hay-teek_a and_o it_o will_v be_v no_o great_a wonder_n to_o see_v homer_n iliad_n and_o homer_n and_o all_o cram_v into_o such_o a_o nutshell_n we_o may_v perceive_v even_o in_o these_o small_a grain_n as_o well_o as_o in_o great_a how_o curious_a and_o careful_a nature_n be_v in_o preserve_v the_o seminal_a principle_n of_o vegetable_a body_n in_o what_o delicate_a strong_a and_o most_o convenient_a cabinet_n she_o lay_v they_o and_o close_v they_o in_o a_o pulp_n for_o their_o safe_a protection_n from_o outward_a danger_n and_o for_o the_o supply_n of_o convenient_a alimental_a juice_n when_o the_o heat_n of_o the_o sun_n begin_v to_o animate_v and_o move_v these_o little_a automanâ—â—s_n or_o engine_n as_o if_o she_o will_v from_o the_o ornament_n wherewith_o she_o as_o deck_v these_o cabinet_n hint_n to_o we_o that_o in_o they_o she_o have_v lay_v up_o her_o jewel_n and_o masterpiece_n and_o this_o if_o we_o be_v but_o diligent_a in_o observe_v we_o shall_v find_v her_o method_n throughout_o there_o be_v no_o curiosity_n in_o the_o elemental_a kingdom_n if_o i_o may_v so_o call_v the_o body_n of_o air_n water_n earth_n that_o be_v comparable_a in_o
call_v by_o the_o name_n of_o dryness_n and_o moisture_n though_o these_o two_o name_n be_v not_o comprehensive_a enough_o be_v common_o use_v to_o signify_v only_o the_o adhere_n or_o not_o adhere_v of_o water_n to_o some_o other_o solid_a body_n of_o this_o kind_n we_o may_v observe_v that_o water_n will_v more_o ready_o wet_v some_o wood_n than_o other_o and_o that_o water_n let_v fall_n upon_o a_o feather_n the_o white_a side_n of_o a_o colwort_n and_o some_o other_o leaf_n or_o upon_o almost_o any_o dusty_a unctuous_a or_o resinous_a superficies_n will_v not_o at_o all_o adhere_v to_o they_o but_o easy_o tumble_v off_o from_o they_o like_o a_o solid_a bowl_n whereas_o if_o drop_v upon_o linen_n paper_n day_n green_a wood_n etc._n etc._n it_o will_v not_o be_v take_v off_o without_o leave_v some_o part_n of_o it_o behind_o adhere_v to_o they_o so_o quicksilver_n which_o will_v very_o hardly_o be_v bring_v to_o stick_v to_o any_o vegetable_a body_n will_v ready_o adhere_v to_o and_o mingle_v with_o several_a clean_a metalline_a body_n and_o that_o we_o may_v the_o better_o find_v what_o the_o cause_n of_o congruity_n and_o incongruity_n in_o body_n be_v it_o will_v be_v requisite_a to_o consider_v first_o what_o be_v the_o cause_n of_o fluidness_n and_o this_o i_o conceive_v to_o be_v nothing_o else_o but_o a_o certain_a pulse_n or_o shake_v of_o heat_n for_o heat_n be_v nothing_o else_o but_o a_o very_a brisk_a and_o vehement_a agitation_n of_o the_o part_n of_o a_o body_n as_o i_o have_v elsewhere_o make_v probabable_a the_o part_n of_o a_o body_n be_v thereby_o make_v so_o loose_a from_o one_o another_o that_o they_o easy_o move_v any_o way_n and_o become_v fluid_a that_o i_o may_v explain_v this_o a_o little_a by_o a_o gross_a similitude_n let_v we_o suppose_v a_o dish_n of_o sand_n set_v upon_o some_o body_n that_o be_v very_o much_o agitate_a and_o shake_v with_o some_o quick_a and_o strong_a vibrate_v motion_n as_o on_o a_o millstone_n turn_v round_o upon_o the_o under_o stone_n very_o violent_o whilst_o it_o be_v empty_a or_o on_o a_o very_a stiff_a drum-head_n which_o be_v vehement_o or_o very_o nimble_o beat_v with_o the_o drumstick_n by_o this_o mean_n the_o sand_n in_o the_o dish_n which_o before_o lay_v like_o a_o dull_a and_o unactive_a body_n become_v a_o perfect_a fluid_fw-la and_o you_o can_v no_o soon_o make_v a_o hole_n in_o it_o with_o your_o finger_n but_o it_o be_v immediate_o fill_v up_o again_o and_o the_o upper_a surface_n of_o it_o level_v nor_o can_v you_o bury_v a_o light_a body_n as_o a_o piece_n of_o cork_n under_o it_o but_o it_o present_o emerge_n or_o swim_v as_o it_o be_v on_o the_o top_n nor_o can_v you_o lay_v a_o heavy_a on_o the_o top_n of_o it_o as_o a_o piece_n of_o lead_n but_o it_o be_v immediate_o bury_v in_o sand_n and_o as_o it_o be_v sink_v to_o the_o bottom_n nor_o can_v you_o make_v a_o hole_n in_o the_o side_n of_o the_o dish_n but_o the_o sand_n shall_v run_v out_o of_o it_o to_o a_o level_n not_o a_o obvious_a property_n of_o a_o fluid_a body_n as_o such_o but_o this_o do_v imitate_v and_o all_o this_o mere_o cause_v by_o the_o vehement_a agitation_n of_o the_o contain_v vessel_n for_o by_o this_o mean_n each_o sand_n become_v to_o have_v a_o vibrative_n or_o dance_a motion_n so_o as_o no_o other_o heavy_a body_n can_v rest_v on_o it_o unless_o sustain_v by_o some_o other_o on_o either_o side_n nor_o will_v it_o suffer_v any_o body_n to_o be_v beneath_o it_o unless_o it_o be_v a_o heavy_a than_o itself_o another_o instance_n of_o the_o strange_a loosen_a nature_n of_o a_o violent_a jar_a motion_n or_o a_o strong_a and_o nimble_a vibrative_a one_o we_o may_v have_v from_o a_o piece_n of_o iron_n grate_v on_o very_o strong_o with_o a_o file_n for_o if_o into_o that_o a_o pin_n be_v screw_v so_o firm_a and_o hard_o that_o though_o it_o have_v a_o convenient_a head_n to_o it_o yet_o it_o can_v by_o no_o mean_n be_v unscrew_v by_o the_o finger_n if_o i_o say_v you_o attempt_v to_o unscrew_v this_o whilst_o grate_v on_o by_o the_o file_n it_o will_v be_v find_v to_o undo_v and_o turn_v very_o easy_o the_o first_o of_o these_o example_n manifest_v how_o a_o body_n actual_o divide_v into_o small_a part_n become_v a_o fluid_a and_o the_o latter_a manifest_a by_o what_o mean_v the_o agitation_n of_o heat_n so_o easy_o loosen_v and_o untie_v the_o part_n of_o solid_a and_o firm_a body_n nor_o need_v we_o suppose_v heat_n to_o be_v any_o thing_n else_o beside_o such_o a_o motion_n for_o suppose_v we_o can_v mechanical_o produce_v such_o a_o one_o quick_a and_o strong_a enough_o we_o need_v not_o spend_v fuel_n to_o melt_v a_o body_n now_o that_o i_o do_v not_o speak_v this_o altogether_o groundless_a i_o must_v refer_v the_o reader_n to_o the_o observation_n i_o have_v make_v upon_o the_o shine_a spark_n of_o steel_n for_o there_o he_o shall_v find_v that_o the_o same_o effect_n be_v produce_v upon_o small_a chip_n or_o parcel_n of_o steel_n by_o the_o flame_n and_o by_o a_o quick_a and_o violent_a motion_n and_o if_o the_o body_n of_o steel_n may_v be_v thus_o melt_v as_o i_o there_o show_v it_o may_v i_o think_v we_o have_v little_a reason_n to_o doubt_v that_o almost_o any_o other_o may_v not_o also_o every_o smith_n can_v inform_v one_o how_o quick_o both_o his_o file_n and_o the_o iron_n grow_v hot_a with_o file_v and_o if_o you_o rub_v almost_o any_o two_o hard_a body_n together_o they_o will_v do_v the_o same_o and_o we_o know_v that_o a_o sufficient_a degree_n of_o heat_n cause_v fluidity_n in_o some_o body_n much_o soon_o and_o in_o other_o late_a that_o be_v the_o part_n of_o the_o body_n of_o some_o be_v so_o loose_a from_o one_o another_o and_o so_o unapt_a to_o cohere_v and_o so_o minute_n and_o little_a that_o a_o very_a small_a degree_n of_o agitation_n keep_v they_o always_o in_o the_o state_n of_o fluidity_n of_o this_o kind_n i_o suppose_v the_o aether_n that_o be_v the_o medium_n or_o fluid_a body_n in_o which_o all_o other_o body_n do_v as_o it_o be_v swim_v and_o move_v and_o particular_o the_o air_n which_o seem_v nothing_o else_o but_o a_o kind_n of_o tincture_n or_o solution_n of_o terrestrial_a and_o aqueous_a particle_n dissolve_v into_o it_o and_o agitate_a by_o it_o just_a as_o the_o tincture_n of_o cocheneel_n be_v nothing_o but_o some_o fine_a dissoluble_a part_n of_o that_o concrete_a lick_v up_o or_o dissolve_v by_o the_o fluid_a water_n and_o from_o this_o notion_n of_o it_o we_o may_v easy_o give_v a_o more_o intelligible_a reason_n how_o the_o air_n become_v so_o capable_a of_o rarefaction_n and_o condensation_n for_o as_o in_o tincture_n one_o grain_n of_o some_o strong_o ting_a substance_n may_v sensible_o colour_v some_o hundred_o thousand_o grain_n of_o appropriate_v liquor_n so_o as_o every_o drop_n of_o it_o have_v its_o proportionate_a share_n and_o be_v sensible_o tinge_v as_o i_o have_v try_v both_o with_o logwood_n and_o cocheneel_v and_o as_o some_o few_o grain_n of_o salt_n be_v able_a to_o infect_v as_o great_a a_o quantity_n as_o may_v be_v find_v by_o praecipitation_n though_o not_o so_o easy_o by_o the_o sight_n or_o aste_v so_o the_o air_n which_o seem_v to_o be_v but_o as_o it_o be_v a_o tincture_n or_o saline_a substance_n dissolve_v and_o agitate_a by_o the_o fluid_a and_o agile_a aether_n may_v disperse_v and_o expand_v itself_o into_o a_o vast_a space_n if_o it_o have_v room_n enough_o and_o infect_v as_o it_o be_v every_o part_n of_o that_o space_n but_o as_o on_o the_o other_o side_n if_o there_o be_v but_o some_o few_o grain_n of_o the_o liquor_n it_o may_v extract_v all_o the_o colour_n of_o the_o ting_a substance_n and_o may_v dissolve_v all_o the_o salt_n and_o thereby_o become_v much_o more_o impregnate_v with_o those_o substance_n so_o may_v all_o the_o air_n that_o suffice_v in_o a_o rarify_v state_n to_o fill_v some_o hundred_o thousand_o space_n of_o aether_n be_v comprise_v in_o only_a one_o but_o in_o a_o position_n proportionable_a dense_n and_o though_o we_o have_v not_o yet_o find_v out_o such_o strainer_n for_o tincture_n and_o salt_n as_o we_o have_v for_o the_o air_n be_v yet_o unable_a to_o separate_v they_o from_o their_o dissolve_v liquor_n by_o any_o kind_n of_o filter_n without_o precipitation_n as_o we_o be_v able_a to_o separate_v the_o air_n from_o the_o aether_n by_o glass_n and_o several_a other_o body_n and_o though_o we_o be_v yet_o unable_a and_o ignorant_a of_o the_o way_n of_o praecipitate_v air_n out_o of_o the_o aether_n as_o we_o can_v tincture_n and_o salt_n out_o of_o several_a dissolvent_n yet_o neither_o of_o these_o seem_a impossible_a from_o the_o nature_n of_o the_o thing_n nor_o so_o improbable_a
ebb_v and_o flow_v resemble_v the_o unstable_a motion_n of_o the_o sea_n the_o phaenomena_n of_o which_o two_o may_v be_v easy_o make_v out_o by_o suppose_v the_o cavern_n by_o which_o they_o be_v feed_v to_o arise_v from_o the_o bottom_n of_o the_o next_o sea_n a_o three_o be_v a_o well_o upon_o the_o river_n ogmore_n in_o glamorganshire_n and_o near_o unto_o newton_n of_o which_o camden_n relate_v himself_o to_o be_v certify_v by_o a_o letter_n from_o a_o learned_a friend_n of_o his_o that_o observe_v it_o fons_n abest_fw-la hinc_fw-la etc._n etc._n the_o letter_n be_v a_o little_a too_o long_o to_o be_v insert_v but_o the_o substance_n be_v this_o that_o this_o well_o ebb_v and_o flow_v quite_o contrary_a to_o the_o flow_a and_o ebb_v of_o the_o sea_n in_o those_o part_n for_o it_o be_v almost_o empty_a at_o full_a sea_n but_o full_a at_o low_a water_n this_o may_v happen_v from_o the_o channel_n by_o which_o it_o be_v supply_v which_o may_v come_v from_o the_o bottom_n of_o a_o sea_n very_o remote_a from_o those_o part_n and_o where_o the_o tide_n be_v much_o differ_v from_o those_o of_o the_o approximate_a shore_n a_o four_o lie_v in_o westmoreland_n near_o the_o river_n loder_n qui_fw-la instar_fw-la euripi_fw-la saepius_fw-la in_o die_fw-la reciprocantibus_fw-la undis_fw-la fluit_fw-la &_o refluit_fw-la which_o ebb_v and_o flow_v many_o time_n a_o day_n this_o may_v proceed_v from_o its_o be_v supply_v from_o many_o channel_n come_v from_o several_a part_n of_o the_o sea_n lie_v sufficient_o distant_a asunder_o to_o have_v the_o time_n of_o high-water_n differ_v enough_o one_o from_o the_o other_o so_o as_o that_o whensoever_o it_o shall_v be_v high_a water_n over_o any_o of_o those_o place_n where_o these_o channel_n begin_v it_o shall_v likewise_o be_v so_o in_o the_o well_o but_o this_o be_v but_o a_o supposition_n a_o seven_o query_n be_v whether_o the_o dissolution_n or_o mix_v of_o several_a body_n whether_o fluid_a or_o solid_a with_o saline_a or_o other_o liquor_n may_v not_o partly_o be_v attribute_v to_o this_o principle_n of_o the_o congruity_n of_o those_o body_n and_o their_o dissolvent_n as_o of_o salt_n in_o water_n metal_n in_o several_a menstruum_n unctuous_a gum_n in_o oil_n the_o mix_n of_o wine_n and_o water_n etc._n etc._n and_o whether_o precipitation_n be_v not_o partly_o make_v from_o the_o same_o principle_n of_o incongruity_n i_o say_v partly_o because_o there_o be_v in_o some_o dissolution_n some_o other_o cause_n concurrent_a i_o shall_v last_o make_v a_o much_o more_o seem_o strange_a and_o unlikely_a query_n and_o that_o be_v whether_o this_o principle_n well_o examine_v and_o explain_v may_v not_o be_v find_v a_o co-efficient_a in_o the_o most_o considerable_a operation_n of_o nature_n as_o in_o those_o of_o heat_n and_o light_n and_o consequent_o of_o rarefaction_n and_o condensation_n hardness_n and_o fluidness_n perspicuity_n and_o opacousness_n refraction_n and_o colour_n etc._n etc._n nay_o i_o know_v not_o whether_o there_o may_v be_v many_o thing_n do_v in_o nature_n in_o which_o this_o may_v not_o be_v say_v to_o have_v a_o finger_n this_o i_o have_v in_o some_o other_o passage_n of_o this_o treatise_n further_o inquire_v into_o and_o show_v that_o as_o well_o light_a as_o heat_n may_v be_v cause_v by_o corrosion_n which_o be_v applicable_a to_o congruity_n and_o consequent_o all_o the_o rest_n will_v be_v but_o subsequent_o in_o the_o mean_a time_n i_o will_v not_o willing_o be_v guilty_a of_o that_o error_n which_o the_o thrice_o noble_a and_o learned_a verulam_n just_o take_v notice_n of_o as_o such_o and_o call_v philosophiae_fw-la genus_fw-la empiricum_fw-la quod_fw-la in_o paucorum_fw-la experimentorum_fw-la angustiis_fw-la &_o obscuritate_fw-la fundatum_fw-la est_fw-la for_o i_o neither_o conclude_v from_o one_o single_a experiment_n nor_o be_v the_o experiment_n i_o make_v use_n of_o all_o make_v upon_o one_o subject_a nor_o wrest_v i_o any_o experiment_n to_o make_v it_o quadrare_fw-la with_o any_o preconceived_a notion_n but_o on_o the_o contrary_a 〈◊〉_d endeavour_n to_o be_v conversant_a in_o divers_a kind_n of_o experiment_n and_o all_o 〈◊〉_d every_o one_o of_o those_o trial_n i_o make_v the_o standard_n or_o touchstone_n by_o which_o i_o try_v all_o my_o former_a notion_n whether_o they_o hold_v out_o in_o weight_n and_o measure_n and_o touch_v etc._n etc._n for_o as_o that_o body_n be_v no_o other_o than_o a_o counterfeit_n gold_n which_o want_v any_o one_o of_o the_o propriety_n of_o gold_n such_o as_o be_v the_o malleableness_n weight_n colour_n fixtness_n in_o the_o fire_n indissolubleness_n in_o aqua_fw-la fortis_fw-la and_o the_o like_a though_o it_o have_v all_o the_o other_o so_o will_v all_o those_o notion_n be_v find_v to_o be_v false_a and_o deceitful_a that_o will_v not_o undergo_v all_o the_o trial_n and_o test_n make_v of_o they_o by_o experiment_n and_o therefore_o such_o as_o will_v not_o come_v up_o to_o the_o desire_a apex_n of_o perfection_n i_o rather_o whole_o reject_v and_o take_v new_a then_o by_o piece_v and_o patch_v endeavour_v to_o retain_v the_o old_a as_o know_v such_o thing_n at_o best_a to_o be_v but_o lame_a and_o imperfect_a and_o this_o course_n i_o learn_v from_o nature_n who_o we_o find_v neglectful_a of_o the_o old_a body_n and_o suffer_v it_o decay_v and_o infirmity_n to_o remain_v without_o repair_n and_o altogether_o solicitous_a and_o careful_a of_o perpetuate_a the_o species_n by_o new_a individual_n and_o it_o be_v certain_o the_o most_o likely_a way_n to_o erect_v a_o glorious_a structure_n and_o temple_n to_o nature_n such_o as_o she_o will_v be_v find_v by_o any_o zealous_a votary_n to_o refide_v in_o to_o begin_v to_o build_v a_o new_a upon_o a_o sure_a foundation_n of_o experiment_n but_o to_o digress_v no_o further_o from_o the_o consideration_n of_o the_o phaenomena_n more_o immediate_o explicable_a by_o this_o experiment_n we_o shall_v proceed_v to_o show_v that_o as_o to_o the_o rise_n of_o water_n in_o a_o filtre_n the_o reason_n of_o it_o will_v be_v manifest_a to_o he_o that_o do_v take_v notice_n that_o a_o filtre_n be_v constitute_v of_o a_o great_a number_n of_o small_a long_a solid_a body_n which_o lie_v so_o close_o together_o that_o the_o air_n in_o its_o get_n in_o between_o they_o do_v lose_v of_o its_o pressure_n that_o it_o have_v against_o the_o fluid_a without_o they_o by_o which_o mean_v the_o water_n or_o liquor_n not_o find_v so_o strong_a a_o resistance_n between_o they_o as_o be_v able_a to_o counterbalance_n the_o pressure_n on_o its_o superficies_n without_o be_v raise_v upward_o till_o it_o meet_v with_o a_o pressure_n of_o the_o air_n which_o be_v able_a to_o hinder_v it_o and_o as_o to_o the_o rise_n of_o oil_n melt_v tallow_n spirit_n of_o wine_n etc._n etc._n in_o the_o week_n of_o a_o candle_n or_o lamp_n it_o be_v evident_a that_o it_o differ_v in_o nothing_o from_o the_o former_a save_v only_o in_o this_o that_o in_o a_o filtre_n the_o liquor_n descend_v and_o run_v away_o by_o another_o part_n and_o in_o the_o week_n the_o liquor_n be_v disperse_v and_o carry_v away_o by_o the_o flame_n something_o there_o be_v ascribable_a to_o the_o heat_n for_o that_o it_o may_v ratify_v the_o more_o volatile_a and_o spirituous_a part_n of_o those_o combustible_a liquor_n and_o so_o be_v make_v light_a than_o the_o air_n it_o may_v be_v protrude_v upward_o by_o that_o more_o ponderous_a fluid_a body_n in_o the_o form_n of_o vapour_n but_o this_o can_v be_v ascribe_v to_o the_o ascension_n of_o but_o a_o very_a little_a and_o most_o likely_a of_o that_o only_a which_o ascend_v without_o the_o week_n as_o for_o the_o rise_n of_o it_o in_o a_o sponge_n bread_n cotton_n etc._n etc._n above_o the_o superficies_n of_o the_o subjacent_a liquor_n what_o have_v be_v say_v about_o the_o filtre_n if_o consider_v will_v easy_o suggest_v a_o reason_n consider_v that_o all_o these_o body_n abound_v with_o small_a hole_n or_o pore_n from_o this_o same_o principle_n also_o viz._n the_o unequal_a pressure_n of_o the_o air_n against_o the_o unequal_a superficies_n of_o the_o water_n proceed_v the_o cause_n of_o the_o accession_n or_o incursion_n of_o any_o float_a body_n against_o the_o side_n of_o the_o contain_v vessel_n or_o the_o appropinquation_n of_o two_o float_a body_n as_o bubble_n cork_n stick_n straw_n etc._n etc._n one_o towards_o another_o as_o for_o instance_n take_v a_o glass-jar_n such_o as_o ab_fw-la in_o the_o seven_o figure_n and_o fill_v it_o pretty_a near_o the_o top_n with_o water_n throw_v into_o it_o a_o small_a round_a piece_n of_o cork_n as_o c_o and_o plunge_v it_o all_o over_o in_o water_n that_o it_o be_v wet_a so_o as_o that_o the_o water_n may_v rise_v up_o by_o the_o side_n of_o it_o then_o place_v it_o any_o where_o upon_o the_o superficies_n about_o a_o inch_n or_o one_o inch_n and_o a_o
fluid_fw-la to_o it_o we_o be_v to_o consider_v also_o the_o congruity_n of_o the_o part_n of_o the_o contain_v fluid_a one_o with_o another_o and_o this_o congruity_n that_o i_o may_v here_o a_o little_a further_o explain_v it_o be_v both_o a_o tenaceous_a and_o a_o attractive_a power_n for_o the_o congruity_n in_o the_o vibrative_a motion_n may_v be_v the_o cause_n of_o all_o kind_n of_o attraction_n not_o only_o electrical_a but_o magnetical_a also_o and_o therefore_o it_o may_v be_v also_o of_o tenacity_n and_o glutinousness_n for_o from_o a_o perfect_a congruity_n of_o the_o motion_n of_o two_o distant_a body_n the_o intermediate_v fluid_a particle_n be_v separate_v and_o drive_v away_o from_o between_o they_o and_o thereby_o those_o congruous_a body_n be_v by_o the_o encompass_v medium_n compel_v and_o force_v near_o together_o wherefore_o that_o attractiveness_n must_v needs_o be_v strong_a when_o by_o a_o immediate_a contact_n they_o be_v force_v to_o be_v exact_o the_o same_o as_o i_o show_v more_o at_o large_a in_o my_o theory_n of_o the_o magnet_n and_o this_o hint_n to_o i_o the_o reason_n of_o the_o suspension_n of_o the_o mercury_n many_o inch_n nay_o many_o foot_n above_o the_o usual_a station_n of_o 30_o inch_n for_o the_o part_n of_o quicksilver_n be_v so_o very_o similar_v and_o congruous_a to_o each_o other_o if_o once_o unite_v will_v not_o easy_o suffer_v a_o divulsion_n and_o the_o part_n of_o water_n that_o be_v any_o way_n heterogeneous_a be_v by_o exantlation_n or_o rarefaction_n exhaust_v the_o remain_a part_n be_v also_o very_o similar_v will_v not_o easy_o part_v neither_o and_o the_o part_n of_o the_o glass_n be_v solid_a be_v more_o difficulty_n disjoin_v and_o the_o water_n be_v somewhat_o similar_v to_o both_o be_v as_o it_o be_v a_o medium_n to_o unite_v both_o the_o glass_n and_o the_o mercury_n together_o so_o that_o all_o three_o be_v unite_v and_o not_o very_o dissimilar_v by_o mean_n of_o this_o contact_n if_o care_n be_v take_v that_o the_o tube_n in_o erect_v be_v not_o shog_v the_o quicksilver_n will_v remain_v suspend_v notwithstanding_o its_o contrary_a endeavour_n of_o gravity_n a_o great_a height_n above_o its_o ordinary_a station_n but_o if_o this_o immediate_a contact_n be_v remove_v either_o by_o a_o mere_a separation_n of_o they_o one_o from_o another_o by_o the_o force_n of_o a_o shog_v whereby_o the_o other_o become_v embody_a between_o they_o and_o lick_v up_o from_o the_o surface_n some_o agile_a part_n and_o so_o hurl_v they_o make_v they_o air_n or_o else_o by_o some_o small_a heterogeneous_a agile_a part_n of_o the_o water_n or_o air_n or_o quicksilver_n which_o appear_v like_o a_o bubble_n and_o by_o its_o jumble_v to_o and_o fro_o there_o be_v make_v way_n for_o the_o heterogeneous_a aether_n to_o obtrude_v itself_o between_o the_o glass_n and_o either_o of_o the_o other_o fluid_n the_o gravity_n of_o mercury_n precipitate_v it_o downward_o with_o very_o great_a violence_n and_o if_o the_o vessel_n that_o hold_v the_o restagnate_a mercury_n be_v convenient_a the_o mercury_n will_v for_o a_o time_n vibrate_v to_o and_o fro_o with_o very_o large_a reciprocation_n and_o at_o last_o will_v remain_v keep_v up_o by_o the_o pressure_n of_o the_o external_a air_n at_o the_o height_n of_o near_a thirty_o inch_n and_o whereas_o it_o may_v be_v object_v that_o it_o can_v be_v that_o the_o mere_a imbody_v of_o the_o aether_n between_o these_o body_n can_v be_v the_o cause_n since_o the_o aether_n have_v a_o free_a passage_n always_o both_o through_o the_o pore_n of_o the_o glass_n and_o through_o those_o of_o the_o fluid_n there_o be_v no_o reason_n why_o it_o shall_v not_o make_v a_o separation_n at_o all_o time_n whilst_o it_o remain_v suspend_v as_o when_o it_o be_v violent_o disjoined_n by_o a_o shog_v to_o this_o i_o answer_v that_o though_o the_o aether_n pass_v between_o the_o particle_n that_o be_v through_o the_o pore_n of_o body_n so_o as_o that_o any_o chasm_n or_o separation_n be_v make_v it_o have_v infinite_a passage_n to_o admit_v its_o entry_n into_o it_o yet_o such_o be_v the_o tenacity_n or_o attractive_a virtue_n of_o congruity_n that_o till_o it_o be_v overcome_v by_o the_o mere_a strength_n of_o gravity_n or_o by_o a_o shog_v assist_v that_o conatus_fw-la of_o gravity_n or_o by_o a_o agile_a particle_n that_o be_v like_o a_o leaver_n agitate_a by_o the_o aether_n and_o thereby_o the_o part_n of_o the_o congruous_a substance_n be_v separate_v so_o far_o asunder_o that_o the_o strength_n of_o congruity_n be_v so_o far_o weaken_v as_o not_o to_o be_v able_a to_o reunite_v they_o the_o part_n to_o be_v take_v hold_v of_o be_v remove_v out_o of_o the_o attractive_a sphere_n as_o i_o may_v so_o speak_v of_o the_o congruity_n such_o i_o say_v be_v the_o tenacity_n of_o congruity_n that_o it_o retain_v and_o hold_v the_o almost_o contiguous_a particle_n of_o the_o fluid_a and_o suffer_v they_o not_o to_o be_v separate_v till_o by_o mere_a force_n that_o attractive_a or_o retentive_a faculty_n be_v overcome_v but_o the_o separation_n be_v once_o make_v beyond_o the_o sphere_n of_o the_o attractive_a activity_n of_o congruity_n that_o virtue_n become_v of_o no_o effect_n at_o all_o but_o the_o mercury_n free_o fall_v downward_o till_o it_o meet_v with_o a_o resistance_n from_o the_o pressure_n of_o the_o ambient_fw-la air_n able_a to_o resist_v its_o gravity_n and_o keep_v it_o force_v up_o in_o the_o pipe_n to_o the_o height_n of_o about_o thirty_o inch_n thus_o have_v i_o gentle_o raise_v a_o steel_n pendulum_fw-la by_o a_o loadstone_n to_o a_o great_a angle_n till_o by_o the_o shake_n of_o my_o hand_n i_o have_v chance_v to_o make_v a_o separation_n between_o they_o which_o be_v no_o soon_o make_v but_o as_o if_o the_o loadstone_n have_v retain_v no_o attractive_a virtue_n the_o pendulum_n move_v free_o from_o it_o towards_o the_o other_o side_n so_o vast_a a_o difference_n be_v there_o between_o the_o attractive_a virtue_n of_o the_o magnet_n when_o it_o act_v upon_o a_o contiguous_a and_o upon_o a_o disjoined_a body_n and_o much_o more_o must_v there_o be_v between_o the_o attractive_a virtue_n of_o congruity_n upon_o a_o contiguous_a and_o disjoined_a body_n and_o in_o truth_n the_o attractive_a virtue_n be_v so_o little_a upon_o a_o body_n disjoin_v that_o though_o i_o have_v with_o a_o microscope_n observe_v very_o diligent_o whether_o there_o be_v any_o extraordinary_a protuberance_n on_o the_o side_n of_o a_o drop_n of_o water_n that_o be_v exceed_v near_o to_o the_o end_n of_o a_o green_a stick_n but_o do_v not_o touch_v it_o i_o can_v not_o perceive_v the_o least_o though_o i_o find_v that_o as_o soon_o as_o ever_o it_o touch_v it_o the_o whole_a drop_n will_v present_o unite_v itself_o with_o it_o so_o that_o it_o seem_v a_o absolute_a contact_n be_v requisite_a to_o the_o exercise_v of_o the_o tenacious_a faculty_n of_o congruity_n obseru._n vii_o of_o some_o phaenomena_n of_o glass_n drop_n these_o glass_n drop_v be_v small_a â—parcels_n of_o coarse_a green_a glass_n take_v out_o of_o the_o pot_n that_o contain_v the_o metal_n as_o they_o call_v it_o in_o fusion_n upon_o the_o end_n of_o a_o iron_n pipe_n and_o be_v exceed_o hot_a and_o thereby_o of_o a_o kind_n of_o sluggish_a fluid_a consistence_n be_v suffer_v to_o drop_v from_o thence_o into_o a_o bucket_n of_o cold_a water_n and_o in_o it_o to_o lie_v till_o they_o be_v grow_v sensible_o cold_a some_o of_o these_o i_o break_v in_o the_o open_a air_n by_o snap_v off_o a_o little_a of_o the_o small_a stem_n with_o my_o finger_n other_o by_o crush_a it_o with_o a_o small_a pair_n of_o plyer_n which_o i_o have_v no_o soon_o do_v than_o the_o whole_a bulk_n of_o the_o drop_n fly_v violent_o with_o a_o very_a brisk_a noise_n into_o multitude_n of_o small_a piece_n some_o of_o which_o be_v as_o small_a as_o dust_n though_o in_o some_o there_o be_v remain_v piece_n pretty_a large_a without_o any_o flaw_n at_o all_o and_o other_o very_o much_o flaw_v which_o by_o rub_v between_o one_o finger_n be_v easy_o reduce_v to_o dust_n these_o disperse_v every_o way_n so_o violent_o that_o some_o of_o they_o pierce_v my_o skin_n i_o can_v not_o find_v either_o with_o my_o naked_a eye_n or_o a_o microscope_n that_o any_o of_o the_o break_a piece_n be_v of_o a_o regular_a figure_n nor_o any_o one_o like_o another_o but_o for_o the_o most_o part_n those_o that_o flaw_v off_o in_o large_a piece_n be_v pretty_o branch_v the_o end_n of_o other_o of_o these_o drop_n i_o nip_v off_o whilst_o all_o the_o body_n and_o end_n of_o they_o lie_v bury_v under_o the_o water_n which_o like_o the_o former_a fly_v all_o to_o piece_n with_o as_o brisk_a a_o noise_n and_o as_o strong_a a_o motion_n other_o of_o these_o i_o try_v to_o break_v by_o
this_o place_n zeictical_o to_o examine_v and_o positive_o to_o prove_v what_o particular_a kind_n of_o motion_n it_o be_v that_o must_v be_v the_o efficient_a of_o light_n for_o though_o it_o be_v a_o motion_n yet_o it_o be_v not_o every_o motion_n that_o produce_v it_o since_o we_o find_v there_o be_v many_o body_n very_o violent_o move_v which_o yet_o afford_v not_o such_o a_o effect_n and_o there_o be_v other_o body_n which_o to_o our_o other_o sense_n seem_v not_o move_v so_o much_o which_o yet_o shine_n this_o water_n and_o quicksilver_n and_o most_o other_o liquor_n heat_v shine_v not_o and_o several_a hard_a body_n as_o iron_n silver_n brass_n copper_n wood_n etc._n etc._n though_o very_o often_o strike_v with_o a_o hammer_n shine_v not_o present_o though_o they_o will_v all_o of_o they_o grow_v exceed_o hot_a whereas_o rot_a wood_n rot_a fish_n sea_n water_n glowworm_n etc._n etc._n have_v nothing_o of_o tangible_a heat_n in_o they_o and_o yet_o where_o there_o be_v no_o strong_a light_n to_o affect_v the_o sensory_a they_o shine_v some_o of_o they_o so_o vivid_o that_o one_o may_v make_v a_o shift_n to_o read_v by_o they_o it_o will_v be_v too_o long_o i_o say_v here_o to_o insert_v the_o discursive_a progress_n by_o which_o i_o inquire_v after_o the_o propriety_n of_o the_o motion_n of_o light_n and_o therefore_o i_o shall_v only_o add_v the_o result_n and_o first_o i_o find_v it_o ought_v to_o be_v exceed_o quick_a such_o as_o those_o motion_n of_o fermentation_n and_o putrefaction_n whereby_o certain_o the_o part_n be_v exceed_v nimble_o and_o violent_o move_v and_o that_o because_o we_o find_v those_o motion_n be_v able_a more_o minutely_o to_o shatter_v and_o divide_v the_o body_n than_o the_o most_o violent_a heat_n or_o menstruum_n we_o yet_o know_v and_o that_o fire_n be_v nothing_o else_o but_o such_o a_o dissolution_n of_o the_o burn_a body_n make_v by_o the_o most_o universal_a menstruum_fw-la of_o all_o sulphureous_a body_n namely_o the_o air_n we_o shall_v in_o a_o other_o place_n of_o this_o tractate_n endeavour_v to_o make_v probable_a and_o that_o in_o all_o extreme_o hot_a shine_a body_n there_o be_v a_o very_a quick_a motion_n that_o cause_v light_a as_o well_o as_o a_o more_o robu_v that_o cause_n heat_v may_v be_v argue_v from_o the_o celerity_n wherewith_o the_o body_n be_v dissolve_v next_o it_o must_v be_v a_o vibrative_a motion_n and_o for_o this_o the_o new_o mention_v diamond_n afford_v we_o a_o good_a argument_n since_o if_o the_o motion_n of_o the_o part_n do_v not_o return_v the_o diamond_n must_v after_o many_o rubbing_n decay_v and_o be_v waste_v but_o we_o have_v no_o reason_n to_o suspect_v the_o latter_a especial_o if_o we_o consider_v the_o exceed_a difficulty_n that_o be_v find_v in_o cut_v or_o wear_v away_o a_o diamond_n and_o a_o circular_a motion_n of_o the_o part_n be_v much_o more_o improbable_a since_o if_o that_o be_v grant_v and_o they_o be_v suppose_v irregular_a and_o angular_a part_n i_o see_v not_o how_o the_o part_n of_o the_o diamond_n shall_v hold_v so_o firm_o together_o or_o remain_v in_o the_o same_o sensible_a dimension_n which_o yet_o they_o do_v next_o if_o they_o be_v globular_a and_o move_v only_o with_o a_o turbinated_a motion_n i_o know_v not_o any_o cause_n that_o can_v impress_v that_o motion_n upon_o the_o pellucid_a medium_n which_o yet_o be_v do_v three_o any_o other_o irregular_a motion_n of_o the_o part_v one_o among_o another_o must_v necessary_o make_v the_o body_n of_o a_o fluid_a consistence_n from_o which_o it_o be_v far_o enough_o it_o must_v therefore_o be_v a_o vibrate_v motion_n and_o three_o that_o it_o be_v a_o very_a short_a vibrate_v motion_n i_o think_v the_o instance_n draw_v from_o the_o shine_a of_o diamond_n will_v also_o make_v probable_a for_o a_o diamond_n be_v the_o hard_a body_n we_o yet_o know_v in_o the_o world_n and_o consequent_o the_o least_o apt_a to_o yield_v or_o bend_v must_v consequent_o also_o have_v its_o vibration_n exceed_v short_a and_o these_o i_o think_v be_v the_o three_o principal_a propriety_n of_o a_o motion_n requisite_a to_o produce_v the_o effect_n call_v light_a in_o the_o object_n the_o next_o thing_n we_o be_v to_o consider_v be_v the_o way_n or_o manner_n of_o the_o trajection_n of_o this_o motion_n through_o the_o interpose_v pellucid_a body_n to_o the_o eye_n and_o here_o it_o will_v be_v easy_o grant_v first_o that_o it_o must_v be_v a_o body_n susceptible_a and_o impartible_a of_o this_o motion_n that_o will_v deserve_v the_o name_n of_o a_o transparent_a and_o next_o that_o the_o part_n of_o such_o a_o body_n must_v be_v homogeneous_a or_o of_o the_o same_o kind_n three_o that_o the_o constitution_n and_o motion_n of_o the_o part_n must_v be_v such_o that_o the_o appulse_n of_o the_o luminous_a body_n may_v be_v communicate_v or_o propagate_v through_o it_o to_o the_o great_a imaginable_a distance_n in_o the_o least_o imaginable_a time_n though_o i_o see_v no_o reason_n to_o affirm_v that_o it_o must_v be_v in_o a_o instant_n for_o i_o know_v not_o any_o one_o experiment_n or_o observation_n that_o do_v prove_v it_o and_o whereas_o it_o may_v be_v object_v that_o we_o see_v the_o sun_n rise_v at_o the_o very_a instant_n when_o it_o be_v above_o the_o sensible_a horizon_n and_o that_o we_o see_v a_o star_n hide_v by_o the_o body_n of_o the_o moon_n at_o the_o same_o instant_n when_o the_o star_n the_o moon_n and_o our_o eye_n be_v all_o in_o the_o same_o line_n and_o the_o like_a observation_n or_o rather_o supposition_n may_v be_v urge_v i_o have_v this_o to_o answer_v that_o i_o can_v as_o easy_o deny_v as_o they_o affirm_v for_o i_o will_v fain_o know_v by_o what_o mean_v any_o one_o can_v be_v assure_v any_o more_o of_o the_o affirmative_a than_o i_o of_o the_o negative_a if_o indeed_o the_o propagation_n be_v very_o slow_a it_o be_v possible_a something_o may_v be_v discover_v by_o eclipse_n of_o the_o moon_n but_o though_o we_o shall_v grant_v the_o progress_n of_o the_o light_n from_o the_o earth_n to_o the_o moon_n and_o from_o the_o moon_n back_o to_o the_o earth_n again_o to_o be_v full_a two_o minute_n in_o perform_v i_o know_v not_o any_o possible_a mean_n to_o discover_v it_o nay_o there_o may_v be_v some_o instance_n perhaps_o of_o horizontal_n eclipse_n that_o may_v seem_v very_o much_o to_o favour_v this_o supposition_n of_o the_o slow_a progression_n of_o light_n then_o most_o imagine_v and_o the_o like_a may_v be_v say_v of_o the_o eclipse_n of_o the_o sun_n etc._n etc._n but_o of_o this_o only_a by_o the_o by_o four_o that_o the_o motion_n be_v propagate_v every_o way_n through_o a_o homogeneous_a medium_n by_o direct_a or_o straight_a line_n extend_v every_o way_n like_o ray_n from_o the_o centre_n of_o a_o sphere_n five_o in_o a_o homogeneous_a medium_n this_o motion_n be_v propagate_v every_o way_n with_o equal_a velocity_n whence_o necessary_o every_o pulse_n or_o vitration_n of_o the_o luminous_a body_n will_v generate_v a_o sphere_n which_o will_v continual_o increase_v and_o grow_v big_a just_a after_o the_o same_o manner_n though_o indefinite_o swift_a as_o the_o wave_n or_o ring_v on_o the_o surface_n of_o the_o water_n do_v swell_v into_o big_a and_o big_a circle_n about_o a_o point_n of_o it_o where_o by_o the_o sink_n of_o a_o stone_n the_o motion_n be_v begin_v whence_o it_o necessary_o follow_v that_o all_o the_o part_n of_o these_o sphere_n undulate_v through_o a_o homogeneous_a medium_n cut_v the_o ray_n at_o right_a angle_n but_o because_o all_o transparent_a medium_n be_v not_o homogeneous_a to_o one_o another_o therefore_o we_o will_v next_o examine_v how_o this_o pulse_n or_o motion_n will_v be_v propagate_v through_o differ_o transparent_a medium_n and_o here_o according_a to_o the_o most_o acute_a and_o excellent_a philosopher_n des_n cartes_n i_o suppose_v the_o sign_n of_o the_o angle_n of_o inclination_n in_o the_o first_o medium_n to_o be_v to_o the_o sign_n of_o refraction_n in_o the_o second_o as_o the_o density_n of_o the_o first_o to_o the_o density_n of_o the_o second_o by_o density_n i_o mean_v not_o the_o density_n in_o respect_n of_o gravity_n with_o which_o the_o refraction_n or_o transparency_n of_o medium_n hold_v no_o proportion_n but_o in_o respect_n only_o to_o the_o trajection_n of_o the_o ray_n of_o light_n in_o which_o respect_n they_o only_o differ_v in_o this_o that_o the_o one_o propagate_v the_o pulse_n more_o easy_o and_o weak_o the_o other_o more_o slow_o but_o more_o strong_o but_o as_o for_o the_o pulse_n themselves_o they_o will_v by_o the_o refraction_n acquire_v another_o propriety_n which_o we_o shall_v now_o endeavour_v to_o explicate_v we_o will_v suppose_v therefore_o in_o the_o first_o figure_n acfd_v to_o be_v a_o physical_a ray_n or_o abc_n and_o def_n to_o
to_o be_v make_v up_o of_o abundance_n of_o small_a ball_n which_o do_v but_o just_a touch_n each_o other_o and_o yet_o there_o be_v so_o many_o contact_n they_o make_v a_o firm_a hard_a mass_n or_o a_o stone_n much_o hard_a than_o freestone_n next_o though_o we_o can_v by_o a_o microscope_n discern_v so_o curious_a a_o shape_n in_o the_o particle_n yet_o to_o the_o naked_a eye_n there_o scarce_o appear_v any_o such_o thing_n which_o may_v afford_v we_o a_o good_a argument_n to_o think_v that_o even_o in_o those_o body_n also_o who_o texture_n we_o be_v not_o able_a to_o discern_v though_o help_v with_o microscope_n there_o may_v be_v yet_o latent_fw-la so_o curious_a a_o schematisme_n that_o it_o may_v abundant_o satisfy_v the_o curious_a searcher_n who_o shall_v be_v so_o happy_a as_o to_o find_v some_o way_n to_o discover_v it_o next_o we_o here_o find_v a_o stone_n though_o to_o the_o naked_a eye_n a_o very_a close_a one_o yet_o every_o way_n perforate_v with_o innumerable_a pore_n which_o be_v nothing_o else_o but_o the_o interstitia_fw-la between_o those_o multitude_n of_o minute_n globular_a particle_n that_o compose_v the_o bulk_n itself_o and_o these_o pore_n be_v not_o only_o discover_v by_o the_o microscope_n but_o by_o this_o contrivance_n i_o take_v a_o pretty_a large_a piece_n of_o this_o stone_n and_o cover_v it_o all_o over_o with_o cement_n save_v only_o at_o two_o opposite_a part_n i_o find_v myself_o able_a by_o blow_v in_o at_o one_o end_n that_o be_v leave_v open_a to_o blow_v my_o spittle_n with_o which_o i_o have_v wet_v the_o other_o end_n into_o abundance_n of_o bubble_n which_o argue_v these_o pore_n to_o be_v open_a and_o pervious_a through_o the_o whole_a stone_n which_o afford_v we_o a_o very_a pretty_a instance_n of_o the_o porousness_n of_o some_o seem_o close_a body_n of_o which_o kind_n i_o shall_v anon_o have_v occasion_n to_o subjoin_v many_o more_o tend_v to_o prove_v the_o same_o thing_n i_o must_v not_o here_o omit_v to_o take_v notice_n that_o in_o this_o body_n there_o be_v not_o a_o vegetative_a faculty_n that_o shall_v so_o contrive_v this_o structure_n for_o any_o peculiar_a use_n of_o vegetation_n or_o growth_n whereas_o in_o the_o other_o instance_n of_o vegetable_a porous_a body_n there_o be_v a_o anima_fw-la or_o forma_fw-la informans_fw-la that_o do_v contrive_v all_o the_o structure_n and_o mechanisme_n of_o the_o constitute_a body_n to_o make_v they_o subservient_fw-fr and_o useful_a to_o the_o great_a work_n or_o function_n they_o be_v to_o perform_v and_o so_o i_o guess_v the_o pore_n in_o wood_n and_o other_o vegetable_n in_o bone_n and_o other_o animal_n substance_n to_o be_v as_o so_o many_o channel_n provide_v by_o the_o great_a and_o alwise_a creator_n for_o the_o conveyance_n of_o appropriate_v juice_n to_o particular_a part_n and_o therefore_o that_o this_o may_v tend_v or_o be_v pervious_a all_o towards_o one_o part_n and_o may_v have_v impediment_n as_o valve_n or_o the_o like_a to_o any_o other_o but_o in_o this_o body_n we_o have_v very_o little_a reason_n to_o suspect_v there_o shall_v be_v any_o such_o design_n for_o it_o be_v equal_o pervious_a every_o way_n not_o only_o forward_a but_o backward_o and_o sideways_o and_o seem_v indeed_o much_o rather_o to_o be_v homogeneous_a or_o similar_v to_o those_o pore_n which_o we_o may_v with_o great_a probability_n believe_v to_o be_v the_o channel_n of_o pellucid_a body_n not_o direct_v or_o more_o open_a any_o one_o way_n than_o any_o other_o be_v equal_o pervious_a every_o way_n and_o according_a as_o these_o pore_n be_v more_o or_o great_a in_o respect_n of_o the_o interstitial_a body_n the_o more_o transparent_a be_v the_o so_o constitute_v concretes_n and_o the_o small_a those_o pore_n be_v the_o weak_a be_v the_o impulse_n of_o light_n communicate_v through_o they_o though_o the_o more_o quick_a be_v the_o progress_n upon_o this_o occasion_n i_o hope_v it_o will_v not_o be_v altogether_o unseasonable_a if_o i_o propound_v my_o conjecture_n and_o hypothesis_n about_o the_o medium_n and_o conveyance_n of_o light_n i_o suppose_v then_o that_o the_o great_a part_n of_o the_o interstitia_fw-la of_o the_o world_n that_o lie_v between_o the_o body_n of_o the_o sun_n and_o star_n and_o the_o planet_n and_o the_o earth_n to_o be_v a_o exceed_o fluid_a body_n very_o apt_a and_o ready_a to_o be_v move_v and_o to_o communicate_v the_o motion_n of_o any_o one_o part_n to_o any_o other_o part_n though_o never_o so_o far_o distant_a nor_o do_v i_o much_o concern_v myself_o to_o determine_v what_o the_o figure_n of_o the_o particle_n of_o this_o exceed_o subtle_a fluid_a medium_n must_v be_v nor_o whether_o it_o have_v any_o interstitiated_a pore_n or_o vacuity_n it_o be_v sufficient_a to_o solve_v all_o the_o phaenomena_n to_o suppose_v it_o a_o exceed_o fluid_a or_o the_o most_o fluid_a body_n in_o the_o world_n and_o as_o yet_o impossible_a to_o determine_v the_o other_o difficulty_n that_o be_v so_o exceed_o fluid_a a_o body_n it_o easy_o give_v passage_n to_o all_o other_o body_n to_o move_v to_o and_o fro_o in_o it_o that_o it_o neither_o receive_v from_o any_o of_o its_o part_n or_o from_o other_o body_n nor_o communicate_v to_o any_o of_o its_o part_n or_o to_o any_o other_o body_n any_o impulse_n or_o motion_n in_o a_o direct_a line_n that_o be_v not_o of_o a_o determinate_a quickness_n and_o that_o when_o the_o motion_n be_v of_o such_o determinate_a swiftness_n it_o both_o receive_v and_o communicate_v or_o propagate_v a_o impulse_n or_o motion_n to_o any_o imaginable_a distance_n in_o straight_a line_n with_o a_o unimaginable_a celerity_n and_o vigour_n that_o all_o kind_n of_o solid_a body_n consist_v of_o pretty_a massy_a particle_n in_o respect_n of_o the_o particle_n of_o this_o fluid_a medium_n which_o in_o many_o place_n do_v so_o touch_v each_o other_o that_o none_o of_o this_o fluid_a medium_n interpose_v much_o after_o the_o same_o manner_n to_o use_v a_o gross_a similitude_n as_o a_o heap_n of_o great_a stone_n compass_v one_o great_a congery_n or_o mass_n in_o the_o midst_n of_o the_o water_n that_o all_o fluid_a body_n which_o we_o may_v call_v tangible_a be_v nothing_o but_o some_o more_o subtle_a part_n of_o those_o particle_n that_o serve_v to_o constitute_v all_o tangible_a body_n that_o the_o water_n and_o such_o other_o fluid_a body_n be_v nothing_o but_o a_o congery_n of_o particle_n agitate_a or_o make_v fluid_a by_o it_o in_o the_o same_o manner_n as_o the_o particle_n of_o salt_n be_v agitate_a or_o make_v fluid_a by_o a_o parcel_n of_o water_n in_o which_o they_o be_v dissolve_v and_o subside_v to_o the_o bottom_n of_o it_o constitute_v a_o fluid_a body_n much_o more_o massy_a and_o dense_a and_o less_o fluid_a than_o the_o pure_a water_n itself_o that_o the_o air_n on_o the_o other_o side_n be_v a_o certain_a company_n of_o particle_n of_o quite_o another_o kind_n that_o be_v such_o as_o be_v very_o much_o small_a and_o more_o easy_o movable_a by_o the_o motion_n of_o this_o fluid_a medium_n much_o like_o those_o very_a subtle_a part_n of_o cochenel_n and_o other_o very_a deep_a ting_a body_n where_o by_o a_o very_a small_a parcel_n of_o matter_n be_v able_a to_o thing_fw-mi and_o diffuse_v itself_o over_o a_o very_a great_a quantity_n of_o the_o fluid_a dissolvent_a or_o somewhat_o after_o that_o manner_n as_o smoke_n and_o such_o like_a minute_n body_n or_o steam_n be_v observe_v to_o thing_fw-mi a_o very_o great_a quantity_n of_o air_n only_o this_o last_o similitude_n be_v deficient_a in_o one_o propriety_n and_o that_o be_v a_o perpetuity_n or_o continuance_n in_o that_o state_n of_o commixture_n with_o the_o air_n but_o the_o former_a do_v more_o near_o approach_v to_o the_o nature_n and_o manner_n of_o the_o air_n be_v be_v dissolve_v by_o this_o fluid_a or_o aether_n and_o this_o similitude_n will_v further_o hold_v in_o these_o propriety_n that_o as_o those_o tincture_n may_v be_v increase_v by_o certain_a body_n so_o may_v they_o be_v precipitate_v by_o other_o as_o i_o shall_v afterward_o show_v it_o to_o be_v very_o probable_a that_o the_o like_a accident_n happen_v even_o to_o the_o air_n itself_o further_o as_o these_o solution_n and_o tincture_n do_v alter_v the_o nature_n of_o these_o fluid_a body_n as_o to_o their_o aptness_n to_o propagate_v a_o motion_n or_o impulse_n through_o they_o even_o so_o do_v the_o particle_n of_o the_o air_n water_n and_o other_o fluid_a body_n and_o of_o glass_n crystal_n etc._n etc._n which_o be_v commix_v with_o this_o bulk_n of_o the_o aether_n alter_v the_o motion_n of_o the_o propagate_v pulse_n of_o light_n that_o be_v where_o these_o more_o bulkie_a particle_n be_v more_o plentiful_a and_o consequent_o a_o lesser_a quantity_n of_o the_o aether_n between_o they_o to_o be_v move_v there_o the_o motion_n must_v necessary_o
be_v the_o swift_a though_o not_o so_o robu_v which_o will_v produce_v those_o effect_n which_o i_o have_v i_o hope_v with_o some_o probability_n ascribe_v to_o it_o in_o the_o digression_n about_o colour_n at_o the_o end_n of_o the_o observation_n on_o mâ—scovy-glass_n now_o that_o other_o stone_n and_o those_o which_o have_v the_o close_a and_o hard_a texture_n and_o seem_v as_o far_o as_o we_o be_v able_a to_o discover_v with_o our_o eye_n though_o help_v with_o the_o best_a microscope_n free_a from_o pore_n be_v yet_o notwithstanding_o replenish_v with_o they_o a_o instance_n or_o two_o will_n i_o suppose_v make_v more_o probable_a a_o very_a solid_a and_o unflawed_a piece_n of_o clear_a white_a marble_n iâ—_n it_o be_v well_o polish_a and_o glaze_v have_v so_o curious_o smooth_v a_o surface_n that_o the_o best_a and_o most_o polish_a surface_n of_o any_o wrought-glass_n seem_v not_o to_o the_o naked_a eye_n nor_o through_o a_o microscope_n to_o be_v more_o smooth_a and_o less_o porons_a and_o yet_o that_o this_o hard_a close_a body_n be_v replenish_v with_o abundance_n of_o pore_n i_o think_v these_o follow_a experiment_n will_v sufficient_o prove_v the_o first_o be_v that_o if_o you_o take_v such_o a_o piece_n and_o for_o a_o pretty_a while_n boil_v it_o in_o turpentine_n and_o oil_n of_o turpentine_n you_o shall_v find_v that_o the_o stone_n will_v be_v all_o imbue_v with_o it_o and_o whereas_o before_o it_o look_v more_o white_a but_o more_o opacous_a now_o it_o will_v look_v more_o greasy_a but_o be_v much_o more_o transparent_a and_o if_o you_o let_v it_o lie_v but_o a_o little_a while_n and_o then_o break_v off_o a_o part_n of_o it_o you_o shall_v find_v the_o unctuous_a body_n to_o have_v penetrate_v it_o to_o such_o a_o determinate_a depth_n every_o way_n within_o the_o surface_n this_o may_v be_v yet_o easy_o try_v with_o a_o piece_n of_o the_o same_o marble_n a_o little_a warm_v in_o the_o fire_n and_o then_o a_o little_a pitch_n or_o tarr_n melt_v on_o the_o top_n of_o it_o for_o these_o black_a body_n by_o their_o â—â—sinoating_a themselves_o into_o the_o invisible_a pore_n of_o the_o stone_n thing_fw-mi it_o with_o so_o black_a a_o hue_n that_o there_o can_v be_v no_o further_o doubt_v of_o the_o truth_n of_o this_o assertion_n that_o it_o abound_v with_o small_a imperceptible_a pore_n now_o that_o other_o body_n will_v also_o sink_v into_o the_o pore_n of_o marble_n beside_o unctuous_a i_o have_v try_v and_o find_v that_o a_o very_a blue_a tincture_n make_v in_o spirit_n of_o urine_n will_v very_o ready_o and_o easy_o sink_v into_o it_o as_o will_v also_o several_a tincture_n draw_v with_o spirit_n of_o wine_n nor_o be_v marble_n the_o only_a seem_o close_a stone_n which_o by_o other_o kind_n of_o experiment_n may_v be_v find_v porous_a for_o i_o have_v by_o this_o kind_n of_o experiment_n on_o divers_a other_o stone_n find_v much_o the_o same_o effect_n and_o in_o some_o indeed_o much_o more_o notable_a other_o stone_n i_o have_v find_v so_o porous_a that_o with_o the_o microscope_n i_o can_v perceive_v several_a small_a wind_a hole_n much_o like_o wormhole_n as_o i_o have_v note_v in_o some_o kind_n of_o purbeck-stone_n by_o look_v on_o the_o surface_n of_o a_o piece_n new_o flaw_v off_o for_o if_o otherwise_o the_o surface_n have_v be_v long_o expose_v to_o the_o air_n or_o have_v be_v scrape_v with_o any_o tool_n those_o small_a cavern_n be_v fill_v with_o dust_n and_o disappear_v and_o to_o confirm_v this_o conjecture_n yet_o further_o i_o shall_v here_o insert_v a_o excellent_a account_n give_v into_o the_o royal_a society_n by_o that_o eminent_o learned_a physician_n doctor_n goddard_n of_o a_o experiment_n not_o less_o instructive_a than_o curious_a and_o accurate_a make_v by_o himself_o on_o a_o very_a hard_a and_o seem_o close_a stone_n call_v oculus_fw-la mundi_fw-la as_o i_o find_v it_o preserve_v in_o the_o record_n of_o that_o honourable_a society_n a_o small_a stone_n of_o the_o kind_n call_v by_o some_o author_n oculus_fw-la mundi_fw-la be_v dry_a and_o cloudy_a weigh_v 5_o 209_o 256_o grain_n the_o same_o put_v under_o water_n for_o a_o night_n and_o somewhat_o more_o become_v transparent_a and_o the_o superficies_n be_v wipe_v dry_a weigh_v 6_o 3_o 256_o grain_n the_o difference_n between_o these_o two_o weight_n 0_o 50_o 256_o of_o a_o grain_n the_o same_o stone_n keep_v out_o of_o water_n one_o day_n and_o become_v cloudy_a again_o weigh_v 5_o 225_o 256_o grain_n which_o be_v more_o than_o the_o first_o weight_n 0_o 16_o 256_o of_o a_o grain_n the_o same_o be_v keep_v two_o day_n long_o weigh_v 5_o 20â—_n 256_o grain_n which_o be_v less_o than_o at_o first_o 0_o 7_o 256_o of_o a_o grain_n be_v keep_v dry_a something_o long_o it_o do_v not_o grow_v sensible_o light_a be_v put_v under_o water_n for_o a_o night_n and_o become_v again_o transparent_a and_o wipe_v dry_a the_o weight_n be_v 6_o 3_o 256_o grain_n the_o same_o with_o the_o first_o after_o put_v in_o water_n and_o more_o than_o the_o last_o weight_n after_o keep_v of_o it_o dry_v â—_o 57_o 256_o of_o a_o grain_n another_o stone_n of_o the_o same_o kind_n be_v variegated_a with_o milky_a white_a and_o gray_a like_o some_o sort_n of_o agate_n while_o it_o lay_v under_o water_n be_v always_o environ_v with_o little_a bubble_n such_o as_o appear_v in_o water_n a_o little_a before_o boil_v next_o the_o side_n of_o the_o vessel_n there_o be_v also_o some_o the_o like_a bubble_n on_o the_o surface_n of_o the_o water_n just_a over_o it_o as_o if_o either_o some_o exhalation_n come_v out_o of_o it_o or_o that_o it_o do_v excite_v some_o fermentation_n in_o the_o part_n of_o the_o water_n contiguous_a to_o it_o there_o be_v little_a sensible_a difference_n in_o the_o transparency_n of_o this_o stone_n before_o the_o put_n under_o water_n and_o after_o to_o be_v sure_a the_o milky_a white_a part_n continue_v as_o before_o but_o more_o difference_n in_o weight_n then_o in_o the_o former_a for_o whereas_o before_o the_o put_n into_o the_o water_n the_o weight_n be_v 18_o 9â—_n 128_o grain_n after_o it_o have_v lyen_fw-we in_o about_o four_o and_o twenty_o hour_n the_o weight_n be_v 20_o â—7_n 128_o grain_n so_o the_o difference_n be_v 1_o 58_o 128_o grain_n the_o same_o stone_n be_v infuse_v in_o the_o water_n scald_a hot_a and_o so_o continue_v for_o a_o while_n after_o it_o be_v cold_a but_o get_v no_o more_o weight_n then_o upon_o infuse_v in_o the_o cold_a neither_o be_v there_o any_o sensible_a difference_n in_o the_o weight_n both_o time_n in_o which_o experiment_n there_o be_v three_o observable_n that_o seem_v very_o manifest_o to_o prove_v the_o porousness_n of_o these_o seem_o close_a body_n the_o first_o be_v their_o acquire_v a_o transparency_n and_o lose_v their_o whiteness_n after_o sleep_v in_o water_n which_o will_v seem_v the_o more_o strong_o to_o argue_v it_o if_o what_o i_o have_v already_o say_v about_o the_o make_n transparent_a or_o clarify_n of_o some_o body_n as_o the_o white_a powder_n of_o beat_a glass_n and_o the_o froth_n of_o some_o glutinous_a transparent_a liquor_n be_v well_o consider_v for_o thereby_o it_o will_v seem_v rational_a to_o think_v that_o this_o transparency_n arise_v from_o the_o insinuation_n of_o the_o water_n which_o have_v much_o the_o same_o refraction_n with_o such_o stony_a particle_n as_o may_v be_v discover_v by_o sand_n view_v with_o a_o microscope_n into_o those_o pore_n which_o be_v former_o replete_a with_o air_n that_o have_v a_o very_a differ_a refraction_n and_o consequent_o be_v very_o reflective_a which_o seem_v to_o be_v confirm_v by_o the_o second_o observable_a namely_o the_o increase_n of_o weight_n after_o steep_v and_o decrease_v upon_o dry_v and_o three_o seem_v yet_o more_o sensible_o confirm_v by_o the_o multitude_n of_o bubble_n in_o the_o last_o experiment_n we_o find_v also_o most_o acid_n salt_n very_o ready_o to_o dissolve_v and_o separate_v the_o part_n of_o this_o body_n one_o from_o another_o which_o be_v yet_o a_o further_a argument_n to_o confirm_v the_o porousness_n of_o body_n and_o will_v serve_v as_o such_o to_o show_v that_o even_a glass_n also_o have_v a_o abundance_n of_o pore_n in_o it_o since_o there_o be_v several_a liquor_n that_o with_o long_o stay_v in_o a_o glass_n will_v so_o corrode_v and_o eat_v into_o it_o as_o at_o last_o to_o make_v it_o pervious_a to_o the_o liquor_n it_o contain_v of_o which_o i_o have_v see_v very_o many_o instance_n since_o therefore_o we_o find_v by_o other_o proof_n that_o many_o of_o those_o body_n which_o we_o think_v the_o most_o solid_a one_o and_o appear_v so_o to_o our_o sight_n have_v notwithstanding_o abundance_n of_o those_o grosser_n kind_n of_o pore_n which_o will_v admit_v several_a kind_n of_o liquor_n into_o they_o why_o
form_n to_o those_o of_o mineral_n air_n and_o water_n have_v no_o form_n at_o all_o unless_o a_o potentiality_n to_o be_v form_v into_o globules_n and_o the_o clod_n and_o parcel_n of_o earth_n be_v all_o irregular_a whereas_o in_o mineral_n she_o do_v begin_v to_o geometrize_v and_o practice_v as_o it_o be_v the_o first_o principle_n of_o mechanic_n shape_a they_o of_o plain_a regular_a figure_n as_o triangle_n square_n etc._n etc._n and_o tetraedron_n cube_n etc._n etc._n but_o none_o of_o their_o form_n be_v comparable_a to_o the_o more_o compound_v one_o of_o vegetable_n for_o here_o she_o go_v a_o step_n further_o form_v they_o both_o of_o more_o complicate_v shape_n and_o add_v also_o multitude_n of_o curious_a mechanic_n contrivance_n in_o their_o structure_n for_o whereas_o in_o vegetable_n there_o be_v no_o determinate_a number_n of_o the_o leaf_n or_o branch_n nor_o no_o exact_o certain_a figure_n of_o leaf_n or_o flower_n or_o seed_n in_o animal_n all_o those_o thing_n be_v exact_o define_v and_o determine_v and_o wherever_o there_o be_v either_o a_o excess_n or_o defect_n of_o those_o determinate_a part_n or_o limb_n there_o have_v be_v some_o impediment_n that_o have_v spoil_v the_o principle_n which_o be_v most_o regular_a here_o we_o shall_v find_v not_o only_o most_o curious_o compound_v shape_n but_o most_o stupendous_a mechanism_n and_o contrivance_n here_o the_o ornament_n be_v in_o the_o high_a perfection_n nothing_o in_o all_o the_o vegetable_a kingdom_n that_o be_v comparable_a to_o the_o decking_n of_o a_o peacock_n nay_o to_o the_o curiosity_n of_o any_o feather_n as_o i_o elsewhere_o show_v nor_o to_o that_o of_o the_o small_a and_o most_o despicable_a fly_n but_o i_o must_v not_o stay_v on_o these_o speculation_n though_o perhaps_o it_o be_v very_o well_o worth_a while_n for_o one_o that_o have_v leisure_n to_o see_v what_o information_n may_v be_v learn_v of_o the_o nature_n or_o use_v or_o virtue_n of_o body_n by_o their_o several_a form_n and_o various_a excellency_n and_o property_n who_o know_v but_o adam_n may_v from_o some_o such_o contemplation_n give_v name_n to_o all_o creature_n if_o at_o least_o his_o name_n have_v any_o significancy_n in_o they_o of_o the_o creatures_n nature_n on_o which_o he_o impose_v it_o as_o many_o upon_o what_o ground_n i_o know_v not_o have_v suppose_v and_o who_o know_v but_o the_o creator_n may_v in_o those_o character_n have_v write_v and_o engrave_v many_o of_o his_o most_o mysterious_a design_n and_o counsel_n and_o give_v man_n a_o capacity_n which_o assist_v with_o diligence_n and_o industry_n may_v be_v able_a to_o read_v and_o understand_v they_o but_o not_o to_o multiply_v my_o digression_n more_o than_o i_o can_v the_o time_n i_o will_v proceed_v to_o the_o next_o which_o be_v obseru._n xxx_o of_o the_o seed_n of_o poppy_n the_o small_a seed_n of_o poppy_n which_o be_v describe_v in_o the_o 19_o scheme_n both_o for_o their_o smallness_n multiplicity_n and_o prettiness_n as_o also_o for_o their_o admirable_a soporifick_a quality_n deserve_v to_o be_v take_v notice_n of_o among_o the_o schem_n xix_o schem_n xx._n other_o microscopical_a seed_n of_o vegetable_n for_o first_o though_o they_o grow_v in_o a_o case_n or_o hive_n oftentimes_o big_a than_o one_o of_o these_o picture_n of_o the_o microscopical_a appearance_n yet_o be_v they_o for_o the_o most_o part_n so_o very_o little_a that_o they_o exceed_v not_o the_o bulk_n of_o a_o small_a nitt_n be_v not_o above_o â—_o 32_o part_n of_o a_o inch_n in_o diameter_n whereas_o the_o diameter_n of_o the_o hive_n of_o they_o oftentimes_o exceed_v two_o inch_n so_o that_o it_o be_v capable_a of_o contain_v near_o two_o hundred_o thousand_o and_o so_o in_o all_o likelihood_n do_v contain_v a_o vast_a quantity_n though_o perhaps_o not_o that_o number_n next_o for_o their_o prettiness_n they_o may_v be_v compare_v to_o any_o microscopical_a seed_n i_o have_v yet_o see_v for_o they_o be_v of_o a_o dark_a brownish_a red_a colour_n curious_o honey_n comb_v all_o over_o with_o a_o very_a pretty_a variety_n of_o network_n or_o a_o small_a kind_n of_o imbosment_n of_o very_o orderly_o raise_v ridge_n the_o surface_n of_o they_o look_v not_o unlike_o the_o inside_n of_o a_o beev'_v stomach_n but_o that_o which_o make_v it_o most_o considerable_a of_o all_o be_v the_o medicinal_a virtue_n of_o it_o which_o be_v such_o as_o be_v not_o afford_v we_o by_o any_o mineral_n preparation_n and_o that_o be_v for_o the_o procure_n of_o sleep_n a_o thing_n as_o necessary_a to_o the_o well-being_n of_o a_o creature_n as_o his_o meat_n and_o that_o which_o refresh_v both_o the_o voluntary_a and_o rational_a faculty_n which_o while_o this_o affection_n have_v seize_v the_o body_n be_v for_o the_o most_o part_n unmoved_a and_o at_o rest_n and_o methinks_v nature_n do_v seem_v to_o hint_n some_o very_a notable_a virtue_n or_o excellency_n in_o this_o plant_n from_o the_o curiosity_n it_o have_v bestow_v upon_o it_o first_o in_o its_o flower_n it_o be_v of_o the_o high_a scarlet-dye_a which_o be_v indeed_o the_o prime_n and_o chief_a colour_n and_o have_v be_v in_o all_o age_n of_o the_o world_n most_o high_o esteem_v next_o it_o have_v as_o much_o curiosity_n show_v also_o in_o the_o husk_n or_o case_n of_o the_o seed_n as_o any_o one_o plant_n i_o have_v yet_o meet_v withal_o and_o three_o the_o very_a seed_n themselves_o the_o microscope_n discover_v to_o be_v very_o curious_o shape_v body_n and_o last_o nature_n have_v take_v such_o abundant_a care_n for_o the_o propagation_n of_o it_o that_o one_o single_a seed_n grow_v into_o a_o plant_n be_v capable_a of_o bring_v some_o hundred_o thousand_o of_o seed_n it_o be_v very_o worthy_a some_o able_a man_n enquiry_n whether_o the_o intention_n of_o nature_n as_o to_o the_o secundary_a end_n of_o animal_n and_o vegetable_a substance_n may_v not_o be_v find_v out_o by_o some_o such_o character_n and_o notable_a impression_n as_o these_o or_o from_o divers_a other_o circumstance_n as_o the_o figure_n colour_n place_n time_n of_o flourish_a spring_a and_o fade_v duration_n taste_n smell_v etc._n etc._n for_o if_o such_o there_o be_v as_o a_o able_a physician_n upon_o good_a ground_n have_v give_v i_o cause_n to_o believe_v we_o may_v then_o instead_o of_o study_v herbal_n where_o so_o little_o be_v deliver_v of_o the_o virtue_n of_o a_o plant_n and_o less_o of_o truth_n have_v recourse_n to_o the_o book_n of_o nature_n itself_o and_o there_o find_v the_o most_o natural_a useful_a and_o most_o effectual_a and_o specific_a medicine_n of_o which_o we_o have_v among_o vegetable_n two_o very_a noble_a instance_n to_o encourage_v such_o a_o hope_n the_o one_o of_o the_o jesuite_n powder_n for_o the_o cure_n of_o intermit_a feaâ—â—â—s_n and_o the_o other_o of_o the_o juice_n of_o poppy_n for_o the_o cure_v the_o defect_n of_o sleep_v obseru._n xxxi_o of_o purslane-seed_n the_o seed_n of_o purslane_n seem_v of_o very_o notable_a shape_n appear_v through_o the_o microscope_n shape_v somewhat_o like_o a_o nautilus_fw-la or_o porcelain_n shell_n as_o may_v be_v see_v in_o the_o xx._n scheme_n it_o be_v a_o small_a body_n coyl_v round_o in_o the_o manner_n of_o a_o spiral_n at_o the_o great_a end_n whereof_o which_o represent_v the_o mouth_n or_o orifice_n of_o the_o shell_n there_o be_v leave_v a_o little_a white_a transparent_a substance_n like_o a_o skin_n represent_v by_o bbbb_n which_o seem_v to_o have_v be_v the_o place_n whereunto_o the_o stem_n be_v join_v the_o whole_a surface_n of_o this_o coclea_fw-la or_o shell_n be_v cover_v over_o with_o abundance_n of_o little_a prominency_n or_o button_n very_o orderly_o range_v into_o spiral_n row_n the_o shape_n of_o each_o of_o which_o seem_v much_o to_o resemble_v a_o wart_n upon_o a_o man_n hand_n the_o order_n variety_n and_o curiosity_n in_o the_o shape_n of_o this_o little_a seed_n make_v it_o a_o very_a pleasant_a object_n for_o the_o microscope_n one_o of_o they_o be_v cut_v asunder_o with_o a_o very_a sharp_a penknife_n discover_v this_o carve_a casket_n to_o be_v of_o a_o brownish_a red_a and_o somewhat_o transparent_a substance_n and_o manifest_v the_o inside_n to_o be_v fill_v with_o a_o whitish_a green_a substance_n or_o pulp_n the_o bed_n wherein_o the_o seminal_a principle_n lie_v enveloped_v there_o be_v multitude_n of_o other_o seed_n which_o in_o shape_n represent_v or_o imitate_v the_o form_n of_o divers_a other_o sort_n of_o shell_n as_o the_o seed_n of_o scurvygrass_n very_o much_o resemble_v the_o make_v of_o a_o concha_n venerea_fw-la a_o kind_n of_o purcelane_n shell_n other_o represent_v several_a sort_n of_o large_a fruit_n sweat_n marjerome_n and_o pot-marjerome_a represent_v olive_n carret_n seed_n be_v like_o a_o cleave_v of_o a_o cocoanut_n husk_n other_o be_v like_o artificial_a thing_n as_o succory_n seed_n be_v like_o a_o quiver_n full_a
the_o high_a wisdom_n and_o providence_n upon_o the_o anatomy_n or_o dissection_n of_o the_o head_n i_o observe_v these_o particular_n first_o that_o this_o outward_a skin_n like_o the_o cornea_n of_o the_o eye_n of_o the_o great_a animal_n be_v both_o flexible_a and_o transparent_a and_o seem_v through_o the_o microscope_n perfect_o to_o resemble_v the_o very_a substance_n of_o the_o cornea_n of_o a_o man_n eye_n for_o have_v cut_v out_o the_o cluster_n and_o remove_v the_o dark_a and_o mucous_a stuff_n that_o be_v subjacent_a to_o it_o i_o can_v see_v it_o transparent_a like_o a_o thin_a piece_n of_o skin_n have_v as_o many_o cavity_n in_o the_o inside_n of_o it_o and_o range_v in_o the_o same_o order_n as_o it_o have_v protuberance_n on_o the_o outside_n and_o this_o propriety_n i_o find_v the_o same_o in_o all_o the_o animal_n that_o have_v it_o whether_o fly_n or_o shellfish_n second_o i_o find_v that_o all_o animal_n that_o i_o have_v observe_v with_o those_o kind_n of_o eye_n have_v within_o this_o cornea_n a_o certain_a clear_a liquor_n or_o juice_n though_o in_o a_o very_a little_a quantity_n and_o i_o observe_v three_o that_o within_o that_o clear_a liquor_n they_o have_v a_o kind_n of_o dark_a mucous_a line_n which_o be_v all_o spread_v round_o within_o the_o cavity_n of_o the_o cluster_n and_o seem_v very_o near_o adjoin_v to_o it_o the_o colour_n of_o which_o in_o some_o fly_n be_v grey_a in_o other_o black_a in_o other_o red_z in_o other_o of_o a_o mix_v colour_n in_o other_o spot_a and_o that_o the_o whole_a cluster_n when_o look_v on_o while_o the_o animal_n be_v live_v or_o but_o new_o kill_v appear_v of_o the_o same_o colour_n that_o this_o coat_n as_o i_o may_v so_o call_v it_o appear_v of_o when_o that_o outward_a skin_n or_o cornea_n be_v remove_v four_o that_o the_o rest_n of_o the_o capacity_n of_o the_o cluster_n be_v in_o some_o as_o in_o dragon_n fly_v etc._n etc._n hollow_a or_o empty_a in_o other_o fill_v with_o some_o kind_n of_o substance_n in_o blue_a fly_n with_o a_o red_a musculous_a substance_n with_o fibre_n tend_v from_o the_o centre_n or_o bottom_n outward_o and_o divers_a other_o with_o various_a and_o differ_a kind_n of_o substance_n that_o this_o curious_a contrivance_n be_v the_o organ_n of_o sight_n to_o all_o those_o various_a crustaceous_a animal_n which_o be_v furnish_v with_o it_o i_o think_v we_o need_v not_o doubt_n if_o we_o consider_v but_o the_o several_a congruity_n it_o have_v with_o the_o eye_n of_o great_a creature_n as_o first_o that_o it_o be_v furnish_v with_o a_o cornea_n with_o a_o transparent_a humour_n and_o with_o a_o wea_z or_o retina_fw-la that_o the_o figure_n of_o each_o of_o the_o small_a hemisphere_n be_v very_o spherical_a exact_o polish_a and_o most_o vivid_v lively_a and_o plump_a when_o the_o animal_n be_v live_v as_o in_o great_a animal_n and_o in_o like_a manner_n dull_a flaccid_a and_o irregular_a or_o shrink_v when_o the_o animal_n be_v dead_a next_o that_o those_o creature_n that_o be_v furnish_v with_o it_o have_v no_o other_o organ_n that_o have_v any_o resemblance_n to_o the_o know_a eye_n of_o other_o creature_n three_o that_o those_o which_o they_o call_v the_o eye_n of_o crab_n lobster_n shrimp_v and_o the_o like_a and_o be_v real_o so_o be_v hemisphere_v almost_o in_o the_o same_o manner_n as_o these_o of_o fly_n be_v and_o that_o they_o real_o be_v so_o i_o have_v very_o often_o try_v by_o cut_v off_o these_o little_a movable_a knob_n and_o put_v the_o creature_n again_o into_o the_o water_n that_o it_o will_v swim_v to_o and_o fro_o and_o move_v up_o and_o down_o as_o well_o as_o before_o but_o will_v often_o hit_v itself_o against_o the_o rock_n or_o stone_n and_o though_o i_o put_v my_o hand_n just_a before_o its_o head_n it_o will_v not_o at_o all_o start_n or_o fly_v back_o till_o i_o touch_v it_o whereas_o while_o those_o be_v remain_v it_o will_v start_v back_o and_o avoid_v my_o hand_n or_o a_o stick_n at_o a_o good_a distance_n before_o it_o touch_v it_o and_o if_o in_o crustaceous_a sea-animal_n than_o it_o seem_v very_o probable_a also_o that_o these_o knob_n be_v the_o eye_n in_o crustaceous_a infect_v which_o be_v also_o of_o the_o same_o kind_n only_o in_o a_o high_a and_o more_o active_a element_n this_o the_o conformity_n or_o congruity_n of_o many_o other_o part_n common_a to_o either_o of_o they_o will_v strong_o argue_v their_o crustaceous_a armour_n their_o number_n of_o leg_n which_o be_v six_o beside_o the_o two_o great_a claw_n which_o answer_n to_o the_o wing_n in_o infect_v and_o in_o all_o kind_n of_o spider_n as_o also_o in_o many_o other_o infect_v that_o want_n wing_n we_o shall_v find_v the_o complete_a number_n of_o they_o and_o not_o only_o the_o number_n but_o the_o very_a shape_n figure_n joint_n and_o claw_n of_o lobster_n and_o crab_n as_o be_v evident_a in_o scorpion_n and_o spider_n as_o be_v visible_a in_o the_o second_o figure_n of_o the_o 31._o scheme_n and_o in_o the_o little_a mite-worm_n which_o i_o call_v a_o land-crab_n describe_v in_o the_o second_o figure_n of_o the_o 33._o scheme_n but_o in_o their_o manner_n of_o generation_n be_v oviparous_a etc._n etc._n and_o it_o be_v very_o worthy_a observation_n whether_o there_o be_v not_o some_o kind_n of_o transformation_n and_o metamorphosis_n in_o the_o several_a state_n of_o crustaceous_a water-animal_n as_o there_o be_v in_o several_a sort_n of_o infect_v for_o if_o such_o can_v be_v meet_v with_o the_o progress_n of_o the_o variation_n will_v be_v much_o more_o conspicuous_a in_o those_o large_a animal_n than_o they_o can_v be_v in_o any_o kind_n of_o infect_v our_o cold_a climate_n afford_v these_o be_v their_o eye_n it_o afford_v we_o a_o very_a pretty_a speculation_n to_o contemplate_v their_o manner_n of_o vision_n which_o as_o it_o be_v very_o differ_v from_o that_o of_o biocular_a animal_n so_o be_v it_o not_o less_o admirable_a that_o each_o of_o these_o pearl_n or_o hemisphere_n be_v a_o perfect_a eye_n i_o think_v we_o need_v not_o doubt_n if_o we_o consider_v only_o the_o outside_n or_o figure_n of_o any_o one_o of_o they_o for_o they_o be_v each_o of_o they_o cover_v with_o a_o transparent_a protuberant_a cornea_n and_o contain_v a_o liquor_n within_o they_o resemble_v the_o watery_a or_o glassy_a humour_n of_o the_o eye_n must_v necessary_o refract_v all_o the_o parallel_a ray_n that_o fall_v on_o they_o out_o of_o the_o air_n into_o a_o point_n not_o far_o distant_a within_o they_o where_o in_o all_o probability_n the_o retina_fw-la of_o the_o eye_n be_v place_v and_o that_o opacous_a dark_a and_o mucous_a inward_a coat_n that_o i_o former_o show_v i_o find_v to_o subtend_v the_o concave_a part_n of_o the_o cluster_n be_v very_o likely_a to_o be_v that_o tunicle_n or_o coat_n it_o appear_v through_o the_o microscope_n to_o be_v place_v a_o little_a more_o than_o a_o diameter_n of_o those_o pearl_n below_o or_o within_o the_o tunica_fw-la cornea_fw-la and_o if_o so_o then_o be_v there_o in_o all_o probability_n a_o little_a picture_n or_o image_n of_o the_o object_n without_o paint_a or_o make_v at_o the_o bottom_n of_o the_o retina_fw-la against_o every_o one_o of_o those_o pearl_n so_o that_o there_o be_v as_o many_o impression_n on_o the_o retina_fw-la or_o opacous_a skin_n as_o there_o be_v pearl_n or_o hemisphere_n on_o the_o cluster_n but_o because_o it_o be_v impossible_a for_o any_o protuberant_a surface_n whatsoever_o whether_o sphaerial_a or_o other_o so_o to_o refract_v the_o ray_n that_o come_v from_o far_o remote_a lateral_a point_n of_o any_o object_n as_o to_o collect_v they_o again_o and_o unite_v they_o each_o in_o a_o distinct_a point_n and_o that_o only_o those_o ray_n which_o come_v from_o some_o point_n that_o lie_v in_o the_o axis_n of_o the_o figure_n produce_v be_v so_o accurate_o refract_v to_o one_o and_o the_o same_o point_n again_o and_o that_o the_o lateral_a ray_n the_o further_o they_o be_v remove_v the_o more_o imperfect_a be_v their_o refracted_a confluence_n it_o follow_v therefore_o that_o only_o the_o picture_n of_o those_o part_n of_o the_o external_a object_n that_o lie_v in_o or_o near_o the_o axis_n of_o each_o hemisphere_n be_v discernable_o paint_v or_o make_v on_o the_o retina_fw-la of_o each_o hemisphere_n and_o that_o therefore_o each_o of_o they_o can_v distinct_o sensate_a or_o see_v only_o those_o part_n which_o be_v very_o near_o perpendicular_o oppose_v to_o it_o or_o lie_v in_o or_o near_o its_o optic_a axis_n now_o though_o there_o may_v be_v by_o each_o of_o these_o eye-pearl_n a_o representation_n to_o the_o animal_n of_o a_o whole_a hemisphere_n in_o the_o same_o manner_n as_o in_o a_o man_n eye_n there_o be_v a_o picture_n or_o sensation_n in_o the_o retina_fw-la of_o all_o the_o object_n
animal_n survive_v several_a motion_n in_o the_o head_n thorax_n and_o belly_n very_o distinct_o of_o differ_v kind_n which_o i_o may_v perhaps_o elsewhere_o endeavour_v more_o accurate_o to_o examine_v and_o to_o show_v of_o how_o great_a benefit_n the_o use_n of_o a_o microscope_n may_v be_v for_o the_o discovery_n of_o nature_n course_n in_o the_o operation_n perform_v in_o animal_n body_n by_o which_o we_o have_v the_o opportunity_n of_o observe_v she_o through_o these_o delicate_a and_o pellucid_a tegument_n of_o the_o body_n of_o infect_v act_v according_o to_o her_o usual_a course_n and_o way_n undisturbed_a whereas_o when_o we_o endeavour_v to_o pry_v into_o her_o secret_n by_o break_v open_a the_o door_n upon_o she_o and_o dissect_v and_o mangle_v creature_n while_o there_o be_v life_n yet_o within_o they_o we_o find_v she_o indeed_o at_o work_n but_o put_v into_o such_o disorder_n by_o the_o violence_n offer_v as_o it_o may_v easy_o be_v imagine_v how_o differ_v a_o thing_n we_o shall_v find_v if_o we_o can_v as_o we_o can_v with_o a_o microscope_n in_o these_o small_a creature_n quiet_o peep_v in_o at_o the_o window_n without_o fright_v she_o out_o of_o her_o usual_a bias_n the_o form_n of_o the_o whole_a creature_n as_o it_o appear_v in_o the_o microscope_n may_v without_o trouble_v you_o with_o more_o description_n be_v plain_o enough_o perceive_v by_o the_o scheme_n the_o hinder_a part_n or_o belly_n consist_v of_o eight_o several_a joint_a part_n namely_o abcdefgh_n of_o the_o first_o figure_n from_o the_o midst_n of_o each_o of_o which_o on_o either_o side_n issue_v out_o three_o or_o four_o small_a brisle_n or_o hair_n i_o i_o i_o i_o i_o the_o tail_n be_v divide_v into_o two_o part_n of_o very_o differ_v make_v one_o of_o they_o namely_o k_o have_v many_o tuft_n of_o hair_n or_o brisle_n which_o seem_v to_o serve_v both_o for_o the_o fin_n and_o tail_n for_o the_o oar_n and_o rude_a of_o this_o little_a creature_n wherewith_o it_o be_v able_a by_o frisk_v and_o bend_v its_o body_n nimble_o to_o and_o fro_o to_o move_v himself_o any_o whether_o and_o to_o skull_n and_o steer_v himself_o as_o he_o please_v the_o other_o part_n l_o seem_v to_o be_v as_o it_o be_v the_o nine_o division_n of_o his_o belly_n and_o have_v many_o single_a brisle_n on_o either_o side_n from_o the_o end_n v_n of_o which_o through_o the_o whole_a belly_n there_o be_v a_o kind_n of_o gut_n of_o a_o dark_a colour_n mmm_o wherein_o by_o certain_a peristaltic_a motion_n there_o be_v a_o kind_n of_o black_a substance_n move_v upward_o and_o downward_o through_o it_o from_o the_o orbicular_a part_n of_o it_o n_o which_o seem_v the_o ventricle_n or_o stomach_n to_o the_o tail_n v_n and_o so_o back_o again_o which_o peristaltic_a motion_n i_o have_v observe_v also_o in_o a_o louse_n a_o gnat_n and_o several_a other_o kind_n of_o transparent_a body_v fly_n the_o thorax_n or_o chest_n of_o this_o creature_n oooo_o be_v thick_a and_o short_a and_o pretty_a transparent_a for_o through_o it_o i_o can_v see_v the_o white_a heart_n which_o be_v the_o colour_n also_o of_o the_o blood_n in_o these_o and_o most_o other_o infect_v to_o beat_v and_o several_a other_o kind_n of_o motion_n it_o be_v bestuck_a and_o adorn_v up_o and_o down_o with_o several_a tuft_n of_o brisle_n such_o as_o be_v point_v out_o by_o p_o p_o p_o p_o the_o head_n q_n be_v likewise_o bestuck_a with_o several_a of_o those_o tuft_n sss_n it_o be_v broad_a and_o short_a have_v two_o black_a eye_n tt_z which_o i_o can_v not_o perceive_v at_o all_o pearl_a as_o they_o afterward_o appear_v and_o two_o small_a horn_n rr_z such_o as_o i_o former_o describe_v schem_n xxvii_o the_o motion_n of_o it_o be_v with_o the_o tail_n forward_o draw_v its_o self_n backward_o by_o the_o frisk_a to_o and_o fro_o of_o that_o tuft_n which_o grow_v out_o of_o one_o of_o the_o stump_n of_o its_o tail_n it_o have_v another_o motion_n which_o be_v more_o suitable_a to_o that_o of_o other_o creature_n and_o that_o be_v with_o the_o head_n forward_o for_o by_o the_o move_n of_o his_o chap_n if_o i_o may_v so_o call_v the_o part_n of_o his_o mouth_n it_o be_v able_a to_o move_v itself_o downward_o very_o gentle_o towards_o the_o bottom_n and_o do_v as_o it_o be_v eat_v up_o its_o way_n through_o the_o water_n but_o that_o which_o be_v most_o observable_a in_o this_o creature_n be_v its_o metamorphosis_n or_o change_n for_o have_v keep_v several_a of_o these_o animal_n in_o a_o glass_n of_o rain-water_n in_o which_o they_o be_v produce_v i_o find_v after_o about_o a_o fortnight_n or_o three_o week_n keep_v that_o several_a of_o they_o fly_v away_o in_o gnat_n leave_v their_o husk_n behind_o they_o in_o the_o water_n float_v under_o the_o surface_n the_o place_n where_o these_o animal_n be_v wont_a to_o reside_v while_o they_o be_v inhabitant_n of_o the_o water_n this_o make_v i_o more_o diligent_o to_o watch_v they_o to_o see_v if_o i_o can_v find_v they_o at_o the_o time_n of_o their_o transformation_n and_o not_o long_o after_o i_o observe_v several_a of_o they_o to_o be_v change_v into_o a_o unusual_a shape_n whole_o differ_v from_o that_o they_o be_v of_o before_o their_o head_n and_o body_n be_v grow_v much_o big_a and_o deep_a but_o not_o broad_a and_o their_o belly_n or_o hinder_v part_n small_a and_o coyl_v about_o this_o great_a body_n much_o of_o the_o fashion_n represent_v by_o the_o prick_v line_n in_o the_o second_o figure_n of_o the_o 27._o scheme_n the_o head_n and_o horn_n now_o swim_v uppermost_a and_o the_o whole_a bulk_n of_o the_o body_n seem_v to_o be_v grow_v much_o light_a for_o when_o by_o my_o fright_v of_o it_o it_o will_v by_o frisk_v out_o of_o its_o tail_n in_o the_o manner_n express_v in_o the_o figure_n by_o bc_n sink_v itself_o below_o the_o surface_n towards_o the_o bottom_n the_o body_n will_v more_o swift_o re-ascend_a then_o when_o it_o be_v in_o its_o former_a shape_n i_o still_o mark_v its_o progress_n from_o time_n to_o time_n and_o find_v its_o body_n still_o to_o grow_v big_a and_o big_a nature_n as_o it_o be_v fit_v and_o accoutr_v it_o for_o the_o light_a element_n of_o which_o it_o be_v now_o go_v to_o be_v a_o inhabitant_n for_o by_o observe_v one_o of_o these_o with_o my_o microscope_n i_o find_v the_o eye_n of_o it_o to_o be_v altogether_o differ_v from_o what_o they_o seem_v before_o appear_v now_o all_o over_o pearl_a or_o knobbed_a like_o the_o eye_n of_o gnat_n as_o be_v visible_a in_o the_o secong_a figure_n by_o a._n at_o length_n i_o see_v part_n of_o this_o creature_n to_o swim_v above_o and_o part_n beneath_o the_o surface_n of_o the_o water_n below_o which_o though_o it_o will_v quick_o plunge_v itself_o if_o i_o by_o any_o mean_v fright_v it_o and_o present_o re-ascend_a into_o its_o former_a posture_n after_o a_o little_o long_a expectation_n i_o find_v that_o the_o head_n and_o body_n of_o a_o gnat_n begin_v to_o appear_v and_o stand_v clear_a above_o the_o surface_n and_o by_o degree_n it_o draw_v out_o its_o leg_n first_o the_o two_o foremost_a than_o the_o other_o at_o length_n its_o whole_a body_n perfect_a and_o entire_a appear_v out_o of_o the_o husk_n which_o it_o leave_v in_o the_o water_n stand_v on_o its_o leg_n upon_o the_o top_n of_o the_o water_n and_o by_o degree_n it_o begin_v to_o move_v and_o after_o fly_v about_o the_o glass_n a_o perfect_a gnat._n i_o have_v be_v the_o more_o particular_a and_o large_a in_o the_o relation_n of_o the_o transformation_n of_o divers_a of_o these_o little_a animal_n which_o i_o observe_v because_o i_o have_v not_o find_v that_o any_o author_n have_v observe_v the_o like_a and_o because_o the_o thing_n itself_o be_v so_o strange_a and_o heterogeneous_a from_o the_o usual_a progress_n of_o other_o animal_n that_o i_o judge_v it_o may_v not_o only_o be_v pleasant_a but_o very_o useful_a and_o necessary_a towards_o the_o complete_n of_o natural_a history_n there_o be_v indeed_o in_o piso_n a_o very_a odd_a history_n which_o this_o relation_n may_v make_v the_o more_o probable_a and_o that_o be_v in_o the_o 2._o chapter_n of_o the_o 4._o book_n of_o his_o natural_a history_n of_o brasil_n where_o he_o say_v porro_fw-la praeter_fw-la tot_fw-la documenta_fw-la fertilitatis_fw-la circa_fw-la vegetabilia_fw-la &_o sensitiva_fw-la marina_fw-la telluris_fw-la aemula_fw-la accidit_fw-la &_o illud_fw-la quod_fw-la paucis_fw-la à _fw-la paranambucensi_fw-la milliaribus_fw-la piscatoris_fw-la uncum_fw-la citra_fw-la intentionem_fw-la contingat_fw-la infigi_fw-la vadis_fw-la petrosis_n &_o loco_fw-la piscis_fw-la spongia_fw-la coralla_fw-la aliasque_fw-la arbusculas_fw-la marinas_fw-la capi_fw-la inter_fw-la haec_fw-la inusitatae_fw-la formae_fw-la prodit_fw-la spongiosa_fw-la arbuscula_fw-la sesquipedis_fw-la longitudinis_fw-la brevioribus_fw-la radicibus_fw-la lapideis_fw-la nitens_fw-la
vanish_v which_o by_o direct_v a_o small_a telescope_n towards_o that_o part_n they_o appear_v and_o disappear_v in_o i_o can_v present_o find_v to_o be_v indeed_o small_a star_n so_o situate_a as_o i_o have_v see_v they_o with_o my_o naked_a eye_n and_o to_o appear_v twinkle_v like_o the_o ordinary_a visible_a star_n nay_o in_o examine_v some_o very_a notable_a part_n of_o the_o heaven_n with_o a_o three_o foot_n tube_n i_o think_v i_o now_o and_o then_o in_o several_a part_n of_o the_o constellation_n can_v perceive_v little_a twinkle_n of_o star_n make_v a_o very_a short_a kind_n of_o apparition_n and_o present_o vanish_v but_o note_v diligent_o the_o place_n where_o they_o thus_o seem_v to_o play_v at_o boe-peep_a i_o make_v use_v of_o a_o very_a good_a twelve_o foot_n tube_n and_o with_o that_o it_o be_v not_o uneasy_a to_o see_v those_o and_o several_a other_o degree_n of_o small_a star_n and_o some_o small_a yet_o that_o seem_v again_o to_o appear_v and_o disappear_v and_o these_o also_o by_o give_v the_o same_o object-glass_n a_o much_o big_a aperture_n i_o can_v plain_o and_o constant_o see_v appear_v in_o their_o former_a place_n so_o that_o i_o have_v observe_v some_o twelve_o several_a magnitude_n of_o star_n less_o than_o those_o of_o the_o six_o magnitude_n common_o recount_v in_o the_o globe_n it_o have_v be_v observe_v and_o confirm_v by_o the_o accurate_a observation_n of_o the_o best_a of_o our_o modern_a astronomer_n that_o all_o the_o luminous_a body_n appear_v above_o the_o horizon_n when_o they_o real_o be_v below_o it_o so_o that_o the_o sun_n and_o moon_n have_v both_o be_v see_v above_o the_o horizon_n while_o the_o moon_n have_v be_v in_o a_o eclipse_n i_o shall_v not_o here_o instance_n in_o the_o great_a refraction_n that_o the_o top_n of_o high_a mountain_n see_v at_o a_o distance_n have_v be_v find_v to_o have_v all_o which_o seem_v to_o argue_v the_o horizontal_n refraction_n much_o great_a than_o it_o be_v hitherto_o general_o believe_v i_o have_v further_o take_v notice_n that_o not_o only_o the_o sun_n moon_n and_o star_n and_o high_a top_n of_o mountain_n have_v suffer_v these_o kind_n of_o refraction_n but_o tree_n and_o several_a bright_a object_n on_o the_o ground_n i_o have_v often_o take_v notice_n of_o the_o twinkle_n of_o the_o reflection_n of_o the_o sun_n from_o a_o glass-window_n at_o a_o good_a distance_n and_o of_o a_o candle_n in_o the_o night_n but_o that_o be_v not_o so_o conspicuous_a and_o in_o observe_v the_o set_a sun_n i_o have_v often_o take_v notice_n of_o the_o tremulation_n of_o the_o tree_n and_o bush_n as_o well_o as_o of_o the_o edge_n of_o the_o sun_n divers_n of_o these_o phaenomena_n have_v be_v take_v notice_n of_o by_o several_a who_o have_v give_v several_a reason_n of_o they_o but_o i_o have_v not_o yet_o meet_v with_o any_o altogether_o satisfactory_a though_o some_o of_o their_o conjecture_n have_v be_v partly_o true_a but_o parley_n also_o false_a set_v myself_o therefore_o upon_o the_o inquiry_n of_o these_o phaenomena_n i_o first_o endeavour_v to_o be_v very_o diligent_a in_o take_v notice_n of_o the_o several_a particular_n and_o circumstance_n observable_a in_o they_o and_o next_o in_o make_v divers_a particular_a experiment_n that_o may_v clear_v some_o doubt_n and_o serve_v to_o determine_v confirm_v and_o illustrate_v the_o true_a and_o adequate_a cause_n of_o each_o and_o upon_o the_o whole_a i_o find_v much_o reason_n to_o think_v that_o the_o true_a cause_n of_o all_o these_o phaenomena_n be_v from_o the_o inflection_n or_o multiplicate_v refraction_n of_o those_o ray_n of_o light_n within_o the_o body_n of_o the_o atmosphere_n and_o that_o it_o do_v not_o proceed_v from_o a_o refraction_n cause_v by_o any_o terminate_a superficies_n of_o the_o air_n above_o nor_o from_o any_o such_o exact_o define_v superficies_n within_o the_o body_n of_o the_o atmosphere_n this_o conclusion_n be_v ground_v upon_o these_o two_o proposition_n first_o that_o a_o medium_n who_o part_n be_v unequal_o dense_a and_o move_v by_o various_a motion_n and_o transposition_n as_o to_o one_o another_o will_v produce_v all_o these_o visible_a effect_n upon_o the_o ray_n of_o light_n without_o any_o other_o coefficient_a cause_n second_o that_o there_o be_v in_o the_o air_n or_o atmosphere_n such_o a_o variety_n in_o the_o constituent_a part_n of_o it_o both_z as_o to_o their_o density_n and_o rarity_n and_o as_o to_o their_o divers_a mutation_n and_o position_n one_o to_o another_o by_o density_n and_o rarity_n i_o understand_v a_o property_n of_o a_o transparent_a body_n that_o do_v either_o more_o or_o less_o refract_v a_o ray_n of_o light_n come_v oblique_o upon_o its_o superficies_n out_o of_o a_o three_o medium_n towards_o its_o perpendicular_a as_o i_o call_v glass_n a_o more_o dense_a body_n than_o water_n and_o water_n a_o more_o rare_a body_n than_o glass_n because_o of_o the_o refraction_n more_o or_o less_o deflect_v towards_o the_o perpendicular_a that_o be_v make_v in_o they_o of_o a_o ray_n of_o light_n out_o of_o the_o air_n that_o have_v the_o same_o inclination_n upon_o either_o of_o their_o superficies_n so_o as_o to_o the_o business_n of_o refraction_n spirit_n of_o wine_n be_v a_o more_o dense_a body_n than_o water_n it_o have_v be_v find_v by_o a_o accurate_a instrument_n that_o measure_v the_o angle_n of_o refraction_n to_o minute_n that_o for_o the_o same_o refracted_a angle_n of_o 30_o 00_o in_o both_o those_o medium_n the_o angle_n of_o incidence_n in_o water_n be_v but_o 41°_n 3_o '_o 5._o but_o the_o angle_n of_o the_o incidence_n in_o the_o trial_n with_o spirit_n of_o wine_n be_v 42°_n 45_o '_o but_o as_o to_o gravity_n water_n be_v a_o more_o dense_a body_n than_o spirit_n of_o wine_n for_o the_o proportion_n of_o the_o same_o water_n to_o the_o same_o very_a well_o rectify_v spirit_n of_o wine_n be_v as_o 21._o to_o 19_o so_o as_o to_o refraction_n water_n be_v more_o dense_n then_o ice_n for_o i_o have_v find_v by_o a_o most_o certain_a experiment_n which_o i_o exhibit_v before_o divers_a illustrious_a person_n of_o the_o royal_a society_n that_o the_o refraction_n of_o water_n be_v great_a than_o that_o of_o ice_n though_o some_o considerable_a author_n have_v affirm_v the_o contrary_a and_o though_o the_o ice_n be_v a_o very_a hard_a and_o the_o water_n a_o very_a fluid_a body_n that_o the_o former_a of_o the_o two_o precede_a proposition_n be_v true_a may_v be_v manifest_v by_o several_a experiment_n as_o first_o if_o you_o take_v any_o two_o liquor_n differ_v from_o one_o another_o in_o density_n but_o yet_o such_o as_o will_v ready_o mix_v as_o salt_n water_n or_o brine_n &_o fresh_a almost_o any_o kind_n of_o salt_n dissolve_v in_o water_n and_o filtrate_v so_o that_o it_o be_v clear_a spirit_n of_o wine_n and_o water_n nay_o spirit_n of_o wine_n and_o spirit_n of_o wine_n one_o more_o high_o rectify_v then_o the_o other_o and_o very_o many_o other_o liquor_n if_o i_o say_v you_o take_v any_o two_o of_o these_o liquor_n and_o mix_v they_o in_o a_o glass_n viol._n against_o one_o side_n of_o which_o you_o have_v fix_v or_o glue_v a_o small_a round_a piece_n of_o paper_n and_o shake_v they_o well_o together_o so_o that_o the_o part_n of_o they_o may_v be_v somewhat_o disturb_v and_o move_v up_o and_o down_o you_o endeavour_v to_o see_v that_o round_a piece_n of_o paper_n through_o the_o body_n of_o the_o liquor_n you_o shall_v plain_o perceive_v the_o figure_n to_o wave_v and_o to_o be_v indent_v much_o after_o the_o same_o manner_n as_o the_o limb_n of_o the_o sun_n through_o a_o telescope_n seem_v to_o be_v save_v only_o that_o the_o mutation_n here_o be_v much_o quick_a and_o if_o in_o steed_n of_o this_o big_a circle_n you_o take_v a_o very_a small_a spot_n and_o fasten_v and_o view_v it_o as_o the_o former_a you_o will_v find_v it_o to_o appear_v much_o like_o the_o twinkle_n of_o the_o star_n though_o much_o quick_a which_o two_o phaenomena_n for_o i_o shall_v take_v notice_n of_o no_o more_o at_o present_a though_o i_o can_v instance_n in_o multitude_n of_o other_o must_v necessary_o be_v cause_v by_o a_o inflection_n of_o the_o ray_n within_o the_o terminate_a superficies_n of_o the_o compound_a medium_n since_o the_o surface_n of_o the_o transparent_a body_n through_o which_o the_o ray_n pass_v to_o the_o eye_n be_v not_o at_o all_o alter_v or_o change_v this_o inflection_n if_o i_o may_v so_o call_v it_o i_o imagine_v to_o be_v nothing_o else_o but_o a_o multiplicate_v refraction_n cause_v by_o the_o unequal_a density_n of_o the_o constituent_a part_n of_o the_o medium_n whereby_o the_o motion_n action_n or_o progress_n of_o the_o ray_n of_o light_n be_v hinder_v from_o proceed_v in_o a_o straight_a line_n and_o inflect_v or_o deflect_v by_o a_o curve_v
of_o venice_n looking-glass_n the_o description_n of_o they_o obser._n 29._o of_o the_o seed_n of_o time_n a_o description_n of_o they_o a_o digression_n about_o nature_n method_n obseru._n 30._o of_o poppy_n seed_n the_o description_n and_o use_n of_o they_o obseru._n 31._o of_o purslane_n seed_n a_o description_n of_o these_o and_o many_o other_o seed_n obseru._n 32._o of_o hair_n the_o description_n of_o several_a sort_n of_o hair_n their_o figure_n and_o texture_n the_o reason_n of_o their_o colour_n a_o description_n of_o the_o texture_n of_o the_o skin_n and_o of_o spunk_n and_o sponge_n by_o what_o passage_n and_o pore_n of_o the_o skin_n transpiration_n seem_v to_o be_v make_v experiment_n to_o prove_v the_o porousness_n of_o the_o skin_n of_o vegetable_n obseru._n 33._o of_o the_o scale_n of_o a_o sole_a a_o description_n of_o their_o beauteous_a form_n obseru._n 34._o of_o the_o sting_n of_o a_o bee_n a_o description_n of_o its_o shape_n mechanism_n and_o use_v obseru._n 35._o of_o feather_n a_o description_n of_o the_o shape_n and_o curious_a contexture_n of_o feather_n and_o some_o conjecture_n thereupon_o obser._n 36._o of_o peacock_n feather_n a_o description_n of_o their_o curious_a form_n and_o propriety_n with_o a_o conjecture_n at_o the_o cause_n of_o their_o variable_a colour_n obser._n 37._o of_o the_o foot_n of_o fly_n and_o other_o infect_v a_o description_n of_o their_o figure_n part_n and_o use_v and_o some_o consideration_n thereupon_o obser._n 38._o of_o the_o wing_n of_o fly_n after_o what_o manner_n and_o how_o swift_o the_o wing_n of_o infect_v move_v a_o description_n of_o the_o pendulum_n under_o the_o wing_n and_o their_o motion_n the_o shape_n and_o structure_n of_o the_o part_n of_o the_o wing_n obser._n 39_o of_o the_o head_n of_o a_o fly_n 1._o all_o the_o face_n of_o a_o drone-f_o be_v nothing_o almost_o but_o eye_n 2._o those_o be_v of_o two_o magnitude_n 3._o they_o be_v hemisphere_n and_o very_o reflective_a and_o smooth_a 4._o some_o direct_v towards_o every_o quarter_n 5._o how_o the_o fly_n cleanse_v they_o 6._o their_o number_n 7._o their_o order_n divers_a particular_n observe_v in_o the_o dissect_n a_o head_n that_o these_o be_v very_o probable_o the_o eye_n of_o the_o creature_n argue_v from_o several_a observation_n and_o experiment_n that_o crab_n lobster_n shrimp_v seem_v to_o be_v water_n infect_v and_o to_o be_v frame_v much_o like_a air_n infect_v several_a consideration_n about_o their_o manner_n of_o vision_n obser._n 40._o of_o the_o tooth_n of_o a_o snail_n a_o brief_a description_n of_o it_o obseru._n 41._o of_o the_o egg_n of_o silkworm_n several_a observable_n about_o the_o egg_n of_o infect_v obseru._n 42._o of_o a_o blue_a fly_n a_o description_n of_o its_o outward_a and_o inward_a part_n it_o be_v hardiness_n to_o endure_v freeze_v and_o steep_v in_o spirit_n of_o wine_n obseru._n 43._o of_o a_o water_n insect_n a_o description_n of_o its_o shape_n transparency_n motion_n both_o internal_a and_o progressive_a and_o transformation_n a_o history_n somewhat_o analogus_fw-la cite_v out_o of_o piso._n several_a observation_n about_o the_o various_a way_n of_o the_o generation_n of_o infect_v by_o what_o mean_v they_o act_v so_o seem_o wise_o and_o prudent_o several_a query_n propound_v postscript_n contain_v a_o relation_n of_o another_o very_a odd_a way_n of_o the_o generation_n of_o infect_v a_o observation_n about_o the_o fertility_n of_o the_o earth_n of_o our_o climate_n in_o produce_v infect_v and_o of_o divers_a other_o way_n of_o their_o generation_n obseru._n 44._o of_o the_o tuft_a gnat._n several_a observable_n about_o infect_v and_o a_o more_o particular_a description_n of_o the_o part_n of_o this_o gnat._n ob._n 45._o of_o the_o great_a belly_a gnat._n a_o short_a description_n of_o it_o obser._n 46._o of_o a_o white_a moth._n a_o description_n of_o the_o feather_n and_o wing_n of_o this_o and_o several_a other_o infect_v divers_a consideration_n about_o the_o wing_n and_o the_o fly_n of_o infect_v and_o bird_n obs._n 47._o of_o the_o shepherd_n spider_n a_o description_n of_o its_o eye_n and_o the_o socket_n of_o its_o long_a leg_n and_o a_o conjecture_n of_o the_o mechanical_a reason_n of_o its_o fabric_n together_o with_o a_o supposition_n that_o it_o be_v not_o unlikely_a but_o spider_n may_v have_v the_o make_v of_o their_o inward_a part_n exact_o like_o a_o crab_n which_o may_v be_v call_v a_o water_n spider_n obser._n 48._o of_o the_o hunt_a spider_n a_o short_a description_n of_o it_o to_o which_o be_v annex_v a_o excellent_a history_n of_o it_o make_v by_o mr._n evelyn_n some_o further_a observation_n on_o other_o spider_n and_o their_o web_n together_o with_o a_o examination_n of_o a_o white_a substance_n fly_v up_o and_o down_o in_o the_o air_n after_o a_o fog_n obser._n 49._o of_o a_o ant._n that_o all_o small_a body_n both_o vegetable_a and_o animal_n do_v quick_o dry_a and_o wither_v the_o best_a remedy_n i_o find_v to_o hinder_v it_o and_o to_o make_v the_o animal_n lie_v still_o to_o be_v observe_v several_a particular_n relate_v of_o the_o action_n of_o this_o creature_n and_o a_o short_a description_n of_o its_o part_n obs._n 50._o of_o the_o wander_a mite_n a_o description_n of_o this_o creature_n and_o of_o another_o very_a small_a one_o which_o usual_o bear_v it_o company_n a_o conjecture_n at_o the_o original_n of_o mite_n obseru._n 51._o of_o a_o crablike_a insect_n a_o brief_a description_n of_o it_o obseru._n 52._o of_o a_o book-worm_n a_o description_n of_o it_o where_o by_o the_o way_n be_v insert_v a_o digression_n experimental_o explicate_v the_o phaenomena_n of_o pearl_n a_o consideration_n of_o its_o digestive_a faculty_n obseru._n 53._o of_o a_o flea_n a_o short_a description_n of_o it_o obseru._n 54._o of_o a_o louse_n a_o description_n of_o its_o part_n and_o some_o notable_a circumstance_n obseru._n 55._o of_o mite_n the_o exceed_a smallness_n of_o some_o mite_n and_o their_o eggs._n a_o description_n of_o the_o mite_n of_o cheese_n and_o a_o intimation_n of_o the_o variety_n of_o form_n in_o other_o mite_n with_o a_o conjecture_n at_o the_o reason_n ob._n 56._o of_o small_a vine-mite_n a_o description_n of_o they_o a_o guess_n at_o their_o original_n their_o exceed_a smallness_n compare_v with_o that_o of_o a_o woodlouse_n from_o which_o they_o may_v be_v suppose_v to_o come_v obseru._n 57_o of_o vinegar-worm_n a_o description_n of_o they_o with_o some_o consideration_n on_o their_o motion_n obs._n 58._o of_o the_o inflection_n of_o the_o ray_n of_o light_n in_o the_o air._n a_o short_a rehearsal_n of_o several_a phaenomena_n a_o attempt_n to_o explicate_v they_o the_o supposition_n found_v on_o two_o proposition_n both_o which_o be_v endeavour_v to_o be_v make_v out_o by_o several_a experiment_n what_o density_n and_o rarity_n be_v in_o respect_n of_o refraction_n the_o refraction_n of_o spirit_n of_o wine_n compare_v with_o that_o of_o common_a water_n the_o refraction_n of_o ice_n a_o experiment_n of_o make_v a_o vndulation_n of_o the_o ray_n by_o the_o mix_n of_o liquor_n of_o differ_a density_n the_o explication_n of_o inflection_n mechanical_o and_o hypothetical_o what_o body_n have_v such_o a_o inflection_n several_a experiment_n to_o show_v that_o the_o air_n have_v this_o propriety_n that_o it_o proceed_v from_o the_o differ_a density_n of_o the_o air_n that_o the_o upper_a and_o under_o part_n of_o the_o air_n be_v of_o differ_v density_n some_o experiment_n to_o prove_v this_o a_o table_n of_o the_o strength_n of_o the_o spring_n of_o the_o air_n answer_v to_o each_o degree_n of_o extension_n when_o first_o make_v and_o when_o repeat_v another_o experiment_n of_o compress_v the_o air._n a_o table_n of_o the_o strength_n of_o the_o air_n answer_v to_o each_o compression_n and_o expansion_n from_o which_o the_o height_n of_o the_o air_n may_v be_v suppose_v indefinite_a to_o what_o degree_n the_o air_n be_v rarify_v at_o any_o distance_n above_o the_o surface_n of_o the_o earth_n how_o from_o this_o inflection_n be_v infer_v and_o several_a phaenomena_n explain_v that_o the_o air_n near_o the_o earth_n be_v compose_v of_o part_n of_o differ_a density_n make_v probable_a by_o several_a experiment_n and_o observation_n how_o this_o propriety_n produce_v the_o effect_n of_o the_o wave_a and_o dance_v of_o body_n and_o of_o the_o twinkle_n of_o the_o star_n several_a phaenomena_n explicate_v some_o quoeries_n add_v 1._o whether_o this_o principle_n may_v not_o be_v make_v use_n of_o for_o perfect_v optic_a glass_n what_o may_v be_v hope_v from_o it_o if_o it_o be_v to_o be_v do_v 2._o whether_o from_o this_o principle_n the_o apparition_n of_o some_o new_a star_n may_v not_o be_v explicate_v 3._o whether_o the_o height_n of_o the_o air_n may_v be_v define_v by_o it_o 4._o whether_o there_o may_v not_o sometime_o be_v so_o great_a a_o disparity_n of_o density_n between_o