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it_o digest_v the_o aerial_a part_n and_o while_o it_o drive_v up_o the_o oil_n it_o bake_v the_o earth_n and_o salt_n again_o all_o these_o retain_v for_o the_o most_o part_n the_o proper_a nature_n of_o the_o substance_n from_o whence_o they_o be_v extract_v it_o be_v evident_a that_o the_o substance_n be_v not_o dissolve_v for_o so_o the_o nature_n of_o the_o whole_a will_v be_v dissolve_v and_o quite_o destroy_v &_o extinguish_v in_o every_o part_n but_o that_o only_a some_o part_n contain_v the_o whole_a substance_n or_o rather_o the_o nature_n of_o the_o whole_a substance_n in_o they_o be_v separate_v fromo_fw-la the_fw-mi part_n that_o have_v likewise_o the_o same_o nature_n in_o they_o the_o three_o instrument_n for_o the_o separation_n and_o dissolution_n of_o body_n damnata_fw-la be_v water_n who_o proper_a matter_n to_o work_v upon_o be_v salt_n and_o it_o serve_v to_o supply_v what_o the_o fire_n can_v not_o perform_v which_o be_v the_o separation_n of_o the_o salt_n from_o the_o earth_n in_o calcine_v body_n all_o the_o other_o part_n fire_n be_v able_a to_o sever_v but_o in_o these_o he_o have_v so_o bake_v the_o little_a humidity_n he_o have_v leave_v in_o they_o with_o their_o much_o earth_n as_o he_o can_v divide_v they_o any_o further_o and_o so_o though_o he_o incorporate_v himself_o with_o they_o yet_o he_o can_v carry_v nothing_o away_o with_o he_o if_o then_o pure_a water_n be_v put_v upon_o that_o chalk_n the_o subtle_a dry_a part_n of_o it_o easy_o join_v to_o the_o supervenient_a moisture_n and_o stick_v close_o to_o it_o draw_v it_o down_o to_o they_o but_o because_o they_o be_v the_o light_a it_o happen_v to_o they_o as_o when_o a_o man_n in_o a_o boat_n pull_v the_o land_n to_o he_o that_o come_v not_o to_o he_o but_o he_o remove_v himself_o and_o his_o boat_n to_o it_o so_o these_o ascend_v in_o the_o water_n as_o they_o dissolve_v and_o the_o water_n more_o and_o more_o penetrate_v they_o and_o by_o addition_n of_o its_o part_n make_v the_o humidity_n which_o glew_v their_o earthy_a part_n together_o great_a and_o great_a make_v a_o wide_a and_o wide_a separation_n between_o those_o little_a earthy_a part_n and_o so_o imbue_v the_o whole_a body_n of_o the_o water_n with_o they_o into_o which_o they_o be_v disperse_v in_o little_a atom_n those_o that_o be_v of_o big_a bulk_n remain_v low_a in_o the_o water_n and_o in_o the_o same_o measure_n as_o their_o quantity_n dissolve_v into_o less_o and_o less_o they_o ascend_v high_a and_o high_o till_o at_o length_n the_o water_n be_v full_o replenish_v with_o they_o and_o they_o be_v diffuse_v through_o the_o whole_a body_n of_o it_o while_o the_o more_o gross_a and_o heavy_a earthy_a part_n have_v nothing_o in_o they_o to_o make_v a_o present_a combination_n between_o they_o and_o the_o water_n fall_v down_o to_o the_o bottom_n and_o settle_v under_o the_o water_n in_o dust_n in_o which_o because_o earth_n alone_o predominate_v in_o a_o very_a great_a excess_n we_o can_v expect_v no_o other_o virtue_n to_o be_v in_o it_o but_o that_o which_o be_v proper_a to_o mere_a earth_n to_o wit_n dryness_n and_o weight_n which_o ordinary_a alchemist_n look_v not_o after_o and_o therefore_o call_v it_o terra_fw-la damnata_fw-la but_o other_o find_v a_o fix_v quality_n in_o it_o by_o which_o they_o perform_v very_o admirable_a operation_n now_o if_o you_o prove_v the_o impregnated_a water_n from_o the_o terra_fw-la damnata_fw-la and_o then_o evaporate_v it_o you_o will_v find_v a_o pure_a white_a substance_n remain_v which_o by_o its_o bulk_n show_v itself_o to_o be_v very_o earthy_a and_o by_o its_o prick_n and_o corrasive_n taste_n will_v inform_v you_o much_o fire_n be_v in_o it_o and_o by_o its_o easy_a dissolution_n in_o a_o moist_a place_n that_o water_n have_v a_o great_a share_n in_o the_o production_n of_o it_o and_o thus_o the_o salt_n of_o body_n be_v make_v and_o extract_v now_o as_o water_n dissolve_v salt_n so_o by_o the_o incorporation_n and_o virtue_n of_o that_o corrosive_a substance_n it_o do_v more_o than_o salt_n itself_o can_v body_n do_v for_o have_v get_v acrimony_n and_o more_o weight_n by_o the_o mixture_n and_o dissolution_n of_o salt_n in_o it_o it_o make_v itself_o away_o into_o solid_a body_n even_o into_o metal_n as_o we_o see_v in_o brass_n and_o iron_n which_o be_v easy_o rust_v by_o salt_n dissolve_v upon_o they_o and_o according_a as_o the_o salt_n be_v strong_a so_o this_o corrasive_n virtue_n increase_v in_o they_o even_o so_o much_o as_o neither_o silver_n nor_o gold_n be_v free_a from_o their_o eat_a quality_n but_o they_o as_o well_o as_o the_o rest_n be_v divide_v into_o most_o small_a part_n and_o make_v to_o swim_v in_o water_n in_o such_o sort_n as_o we_o have_v explicate_v above_o and_o whereof_o every_o ordinary_a alchemist_n teach_v the_o practice_n but_o this_o be_v not_o all_o salt_n help_v as_o well_o to_o melt_v hard_a body_n and_o metal_n as_o to_o corrode_v they_o for_o foam_n fusible_a salt_n flow_v upon_o they_o by_o the_o heat_n of_o the_o fire_n and_o other_o dissolve_v by_o the_o steam_n of_o the_o metal_n that_o incorporate_v with_o they_o as_o soon_o as_o they_o be_v in_o flux_n mingle_v with_o the_o natural_a juice_n of_o the_o metal_n and_o penetrate_v deep_o then_o without_o they_o the_o fire_n can_v do_v and_o swell_v they_o and_o make_v they_o fit_a to_o run_v these_o be_v the_o principal_a way_n of_o the_o two_o last_o instrument_n in_o dissolve_v of_o body_n take_v each_o of_o they_o by_o itself_o but_o there_o remain_v cause_v one_o more_o of_o very_o great_a importance_n as_o well_o in_o the_o work_n of_o nature_n as_o of_o art_n in_o which_o both_o the_o former_a be_v join_v and_o concur_v and_o that_o be_v putrefaction_n who_o way_n of_o work_v be_v by_o gentle_a heat_n and_o moisture_n to_o wet_v and_o pierce_v the_o body_n it_o work_v upon_o whereby_o it_o be_v make_v to_o swell_v and_o the_o hot_a part_n of_o it_o be_v loosen_v they_o be_v at_o length_n drink_v up_o and_o drown_v in_o the_o moist_a one_o from_o whence_o by_o fire_n they_o be_v easy_o separate_v as_o we_o have_v already_o declare_v and_o those_o moist_a part_n afterward_o leave_v it_o the_o substance_n remain_v dry_a and_o fall_v in_o piece_n for_o want_v of_o the_o glue_v that_o hold_v it_o together_o chap._n xvi_o a_o explication_n of_o certain_a maxim_n touch_v the_o operation_n and_o quality_n of_o body_n and_o whether_o the_o element_n be_v find_v pure_a in_o any_o part_n of_o the_o world_n out_o of_o what_o we_o have_v determine_v concern_v the_o natural_a agent_n action_n of_o body_n in_o their_o make_n and_o destroy_v one_o another_o it_o be_v easy_a to_o understand_v the_o right_a meaning_n of_o some_o term_n and_o the_o true_a reason_n of_o some_o maxim_n much_o use_v in_o the_o school_n as_o first_o when_o philosopher_n attribute_v to_o all_o sort_n of_o corporeal_a agent_n a_o sphere_n of_o activity_n the_o sense_n of_o that_o manner_n of_o expression_n in_o fire_n appear_v plain_o by_o what_o we_o have_v already_o declare_v of_o the_o nature_n and_o manner_n of_o operation_n of_o that_o element_n and_o in_o like_a manner_n if_o we_o consider_v how_o the_o force_n of_o cold_a consist_v in_o a_o compression_n of_o the_o body_n that_o be_v make_v cold_a we_o may_v perceive_v that_o if_o in_o the_o cool_v body_n there_o be_v any_o subtle_a part_n which_o can_v break_v forth_o from_o the_o rest_n such_o compression_n will_v make_v they_o do_v so_o especial_o if_o the_o compression_n be_v of_o little_a part_n of_o the_o compress_a body_n within_o themselves_o as_o well_o as_o of_o the_o outward_a bulk_n of_o the_o whole_a body_n round_o about_o for_o at_o first_o the_o compression_n of_o such_o cause_n in_o the_o body_n
refraction_n 6._o a_o answer_n to_o the_o argument_n bring_v in_o favour_n of_o mounseur_fw-fr des_fw-fr cartes_n his_o opinion_n 7._o the_o true_a cause_n of_o refraction_n of_o light_n both_o at_o its_o entrance_n and_o at_o its_o go_v out_o from_o the_o refle_a body_n 8._o a_o general_a rule_n to_o know_v the_o nature_n of_o reflection_n and_o refraction_n in_o all_o sort_n of_o surface_n 9_o a_o body_n of_o great_a part_n and_o great_a pore_n make_v a_o great_a refraction_n than_o one_o of_o lesser_a part_n and_o lesser_a pore_n 10._o a_o confirmation_n of_o the_o former_a doctrine_n out_o of_o the_o nature_n of_o body_n that_o refract_v light_a chap._n fourteen_o of_o the_o composition_n quality_n &_o generation_n of_o mix_a body_n 1._o the_o connexion_n of_o this_o chapter_n with_o the_o rest_n and_o the_o author_n intent_n in_o it_o 2._o that_o there_o be_v a_o least_o size_n of_o body_n and_o that_o this_o least_o size_n be_v find_v in_o fire_n 3._o the_o first_o conjunction_n of_o part_n be_v in_o body_n of_o least_o size_n and_o it_o be_v make_v by_o the_o force_n of_o quantity_n 4._o the_o second_o sort_n of_o conjunction_n be_v compactedness_n in_o simple_a element_n and_o it_o proceed_v from_o density_n 5._o the_o three_o conjunction_n be_v of_o part_n of_o different_a element_n and_o it_o proceed_v from_o quantity_n and_o density_n together_o 6._o the_o reason_n why_o liquid_a body_n do_v easy_o join_v together_o and_o dry_a one_o difficult_o 7._o that_o no_o two_o hard_a body_n can_v touch_v one_o another_o immediate_o 8._o how_o mix_v body_n be_v frame_v in_o general_n 9_o the_o cause_n of_o the_o several_a degree_n of_o solidity_n in_o mix_a body_n 10._o the_o rule_n whereto_o be_v reduce_v all_o the_o several_a combination_n of_o element_n in_o compound_v of_o mix_a body_n 11._o earth_n and_o water_n be_v the_o basis_n of_o all_o permanent_a mix_a body_n 12._o what_o kind_n of_o body_n those_o be_v where_o water_n be_v the_o basis_n and_o earth_n the_o predominant_a element_n over_o the_o other_o two_o 13._o of_o those_o body_n where_o water_n be_v the_o basis_n air_n be_v the_o predominant_a element_n 14._o what_o kind_n of_o body_n result_v where_o water_n be_v the_o basis_n and_o fire_n the_o predominant_a element_n 15._o of_o those_o body_n where_o water_n be_v in_o excess_n it_o alone_o be_v both_o the_o basis_n and_o the_o predominant_a element_n 16._o of_o those_o body_n where_o earth_n alone_o be_v the_o basis_n and_o also_o the_o predominant_a in_o excess_n over_o the_o other_o three_o element_n 17._o of_o those_o body_n where_o earth_n be_v the_o basis_n &_o water_n be_v the_o predominant_a element_n over_o the_o other_o two_o 18._o of_o those_o body_n where_o earth_n be_v the_o basis_n air_n be_v the_o predominant_a 19_o of_o those_o body_n where_o earth_n be_v the_o basis_n fire_n be_v the_o predominant_a 20._o all_o the_o second_o quality_n of_o mix_a body_n arise_v from_o several_a combination_n of_o the_o first_o quality_n and_o be_v at_o last_o resolve_v into_o several_a degree_n of_o rarity_n &_o density_n 21._o that_o in_o the_o planet_n &_o star_n there_o be_v a_o like_a variety_n of_o mix_a body_n cause_v by_o light_n as_o here_o on_o earth_n 22._o in_o what_o manner_n the_o element_n work_v on_o one_o another_o in_o the_o composition_n of_o mix_a body_n and_o in_o particular_a fire_n which_o be_v the_o most_o active_a 23._o a_o particular_a declaration_n touch_v the_o generation_n of_o metal_n chap._n xv._n of_o the_o dissolution_n of_o mix_a body_n 1._o why_o some_o body_n be_v brittle_a and_o other_o tough_a or_o apt_a to_o withstand_v outward_a violence_n the_o first_o instrument_n to_o dissolve_v mix_v body_n 2._o how_o outward_a violence_n do_v work_v on_o the_o most_o compact_a body_n 3._o the_o several_a effect_n of_o fire_n the_o second_o and_o chief_a instrument_n to_o dissolve_v all_o compound_a body_n 4._o the_o reason_n why_o some_o body_n be_v not_o dissolve_v by_o fire_n 5._o the_o reason_n why_o fire_n melt_v gold_n but_o can_v consume_v it_o 6._o why_o lead_n be_v easy_o consume_v and_o calcint_v by_o fire_n 7._o why_o and_o how_o some_o body_n be_v divide_v by_o fire_n into_o spirit_n water_n oil_n salt_n and_o earth_n and_o what_o those_o part_n be_v 8._o how_o water_n the_o three_o instrument_n to_o dissolve_v body_n dissolu_v calx_fw-la into_o salt_n and_o so_o into_o terra_fw-la damnata_fw-la 9_o how_o water_n mingle_v with_o salt_n become_v a_o most_o powerful_a agent_n to_o dissolve_v other_o body_n 10._o how_o putrefaction_n be_v cause_v chap._n xvi_o a_o explication_n of_o certain_a maxim_n touch_v the_o operation_n and_o qualy_n of_o body_n and_o whether_o the_o element_n be_v find_v pure_a in_o any_o part_n of_o the_o world_n 1._o what_o be_v the_o sphere_n of_o activity_n in_o corporeal_a agent_n 2._o the_o reason_n why_o no_o body_n can_v work_v in_o distance_n 3._o a_o objection_n answer_v against_o the_o manner_n of_o explicate_v the_o former_a axiom_n 4._o of_o re-action_n and_o first_o in_o pure_a local_a motion_n that_o each_o agent_n must_v suffer_v in_o act_v and_o act_n in_o suffering_n 5._o the_o former_a doctrine_n apply_v to_o other_o local_a motion_n design_v by_o particular_a name_n and_o that_o suisseths_n argument_n be_v of_o no_o force_n against_o this_o way_n of_o doctrine_n 6._o why_o some_o notion_n do_v admit_v of_o intention_n and_o remission_n and_o other_o not_o 7._o that_o in_o every_o part_n of_o our_o habitable_a world_n all_o the_o four_o element_n be_v find_v pure_a in_o small_a atom_n but_o not_o in_o any_o great_a bulk_n chap._n xvii_o of_o rarefaction_n and_o condensation_n the_o two_o first_o motion_n of_o particular_a body_n 1._o the_o author_n intent_n in_o this_o and_o the_o follow_a chapter_n 2._o that_o body_n may_v be_v rarify_v both_o by_o outward_a and_o inward_a heart_n and_o how_o this_o be_v perform_v 3._o of_o the_o great_a effect_n of_o rarefaction_n 4._o the_o first_o manner_n of_o condensation_n by_o heat_n 5._o the_o second_o manner_n of_o condensation_n by_o cold_a 6._o that_o ice_n be_v not_o water_v rarify_v but_o condense_v 7._o how_o wind_n snow_n and_o hail_n be_v make_v and_o wind_n by_o rain_n allay_v 8._o how_o part_n of_o the_o same_o or_o divers_a body_n be_v join_v more_o strong_o together_o by_o condensation_n 9_o vacuity_n can_v be_v the_o reason_n why_o water_n impregnate_v to_o the_o full_a with_o one_o kind_n of_o salt_n will_v notwithstanding_o receive_v more_o of_o another_o 10._o the_o true_a reason_n of_o the_o former_a effect_n 11._o the_o reason_n why_o body_n of_o the_o same_o nature_n do_v join_v more_o easy_o together_o than_o other_o chap._n xviii_o of_o another_o motion_n belong_v to_o particular_a body_n call_v attraction_n and_o of_o certain_a operation_n term_v magical_a 1._o what_o attraction_n be_v and_o from_o whence_o it_o proceed_v 2._o the_o true_a sense_n of_o the_o maxim_n that_o nature_n abhor_v from_o vacuity_n 3._o the_o true_a reason_n of_o attraction_n 4._o water_n may_v be_v bring_v by_o the_o force_n of_o attraction_n to_o what_o height_n soever_o 5._o the_o doctrine_n touch_v the_o attraction_n of_o water_n in_o syphon_n 6._o that_o the_o syphon_n do_v not_o prove_v water_n to_o weigh_v in_o its_o own_o orb_n 7._o concern_v attraction_n cause_v by_o fire_n 8._o concern_v attraction_n make_v by_o virture_n of_o hot_a body_n amulet_n &c_n &c_n 9_o the_o natural_a reason_n give_v for_o divers_a operation_n esteem_v by_o some_o to_o be_v magical_a chap._n xix_o of_o three_o other_o motion_n belong_v to_o particular_a body_n filtration_n restitution_n and_o electrical_a attraction_n 1._o what_o be_v filtration_n and_o how_o it_o be_v effect_v 2._o what_o cause_v the_o water_n in_o filtration_n to_o ascend_v 3._o why_o the_o filter_n will_v not_o drop_v unless_o the_o label_n hang_v low_a than_o the_o water_n 4._o of_o the_o motion_n of_o restitution_n and_o why_o some_o body_n stand_v bend_v other_o not_o 5._o why_o some_o body_n return_v only_o in_o part_n to_o their_o natural_a figure_n other_o entire_o 6._o concern_v the_o nature_n of_o those_o body_n which_o shrink_v and_o stretch_v 7._o how_o great_a and_o wonderful_a effect_n proceed_v from_o small_a plain_a and_o simple_a principle_n 8._o concern_v electrical_a attratâ—on_n and_o the_o cause_n of_o it_o 9_o cabeus_n his_o opinion_n refute_v concern_v the_o cause_n of_o electrical_a motion_n chap._n xx._n of_o the_o lodestone_n generation_n and_o its_o particulas_fw-la motion_n 1._o the_o extreme_a heat_n of_o the_o sun_n under_o the_o zodiac_n draw_v a_o stream_n of_o air_n from_o each_o pole_n into_o the_o torrid_a zone_n 2._o the_o atom_n of_o these_o two_o stream_n come_v together_o be_v apt_a to_o incorporate_v with_o one_o another_o 3._o by_o the_o meeting_n and_o mingle_v together_o
water_n by_o sink_v in_o one_o place_n to_o rise_v round_o about_o it_o must_v of_o necessity_n follow_v that_o the_o bullet_n which_o in_o enter_v have_v press_v down_o the_o first_o part_n of_o the_o water_n have_v withal_o thereby_o put_v other_o further_o off_o in_o a_o motion_n of_o rise_v and_o therefore_o the_o bullet_n in_o its_o go_v on_o must_v meet_v with_o some_o water_n swell_v upward_o and_o from_o it_o receive_v a_o ply_v that_o way_n which_o can_v fail_v of_o carry_v it_o above_o the_o mark_v it_o be_v level_v at_o and_o so_o we_o see_v this_o effect_n proceed_v from_o reflection_n or_o the_o bound_a of_o the_o water_n and_o not_o from_o refraction_n beside_o that_o it_o may_v just_o be_v suspect_v the_o shooter_n take_v his_o aim_n too_o high_a by_o reason_n of_o the_o mark_n appear_v in_o the_o water_n high_o than_o in_o truth_n it_o be_v unless_o such_o false_a aim_v be_v due_o prevent_v neither_o be_v monsir_fw-fr des_fw-fr cartes_n his_o excuse_n to_o be_v admit_v when_o he_o say_v that_o light_n go_v otherwise_o than_o a_o ball_n will_v do_v because_o in_o a_o glass_n or_o water_n the_o etherial_a substance_n which_o he_o surpose_v to_o run_v through_o all_o body_n be_v more_o efficacious_o move_v than_o in_o air_n and_o thersore_a light_n must_v go_v fast_o in_o the_o glass_n than_o in_o the_o air_n and_o so_o turn_v on_o that_o side_n of_o the_o straight_a line_n which_o be_v contrary_a to_o the_o side_n that_o the_o ball_n take_v because_o the_o ball_n go_v not_o so_o swift_o for_o not_o to_o dispute_v the_o verity_n of_o this_o proposition_n the_o effect_n he_o pretend_v be_v impossible_a for_o if_o the_o etherial_a suhstance_n in_o the_o air_n before_o the_o glass_n be_v flow_o move_v the_o motion_n of_o which_o he_o call_v light_a it_o be_v impossible_a that_o the_o etherial_a substance_n in_o the_o glass_n or_o in_o the_o water_n shall_v be_v more_o smart_o move_v than_o it_o well_o it_o may_v be_v less_o but_o without_o all_o doubt_n the_o impulse_n of_o the_o etherial_a substance_n in_o the_o glass_n can_v be_v great_a than_o its_o adequate_a cause_n which_o be_v the_o motion_n of_o the_o other_o part_n that_o be_v in_o the_o air_n precedent_n to_o glass_n again_o after_o it_o be_v pass_v the_o glass_n it_o shall_v return_v to_o be_v a_o straight_a line_n with_o the_o line_n that_o it_o make_v in_o the_o air_n precedent_n to_o the_o glass_n in_o the_o subsequent_a air_n must_v take_v off_o just_a as_o much_o and_o no_o more_o as_o the_o glass_n do_v add_v the_o contrary_a whereof_o experience_n show_v we_o three_o in_o this_o explication_n it_o will_v always_o go_v one_o way_n in_o the_o air_n and_o another_o way_n in_o the_o glass_n whereas_o all_o experience_n testify_v that_o in_o a_o glass_n convex_v on_o both_o side_n it_o still_o go_v in_o the_o air_n after_o its_o go_v out_o to_o the_o same_o side_n as_o it_o do_v in_o the_o glass_n but_o more_o and_o the_o like_a happen_v in_o glass_n on_o both_o side_n concave_a wherefore_o it_o be_v evident_a that_o it_o be_v the_o snperficies_n of_o the_o glass_n that_o be_v the_o worker_n on_o both_o side_n and_o not_o the_o substance_n of_o the_o air_n on_o one_o side_n and_o of_o the_o glass_n on_o the_o other_o and_o last_o his_o answer_n no_o way_n solus_fw-la our_o objection_n which_o prove_v that_o the_o resistance_n both_o way_n be_v proportionate_a to_o the_o force_n that_o move_v and_o by_o consequence_n that_o the_o thing_n move_v must_v go_v straight_o as_o we_o may_v imagine_v will_v happen_v if_o a_o bullet_n be_v shoot_v stop_v through_o a_o green_a mud_n wall_n in_o which_o there_o be_v many_o round_a stick_n so_o thin_a set_v that_o the_o bullet_n may_v pass_v with_o ease_n through_o they_o for_o as_o long_o as_o the_o bullet_n touch_v none_o of_o they_o which_o express_v his_o case_n it_o will_v go_v straight_o but_o if_o it_o touch_v any_o which_o resemble_v we_o as_o by_o and_o by_o will_n apperar_fw-it it_o will_v glance_v according_a to_o the_o quality_n of_o the_o touch_n and_o move_v from_o the_o stick_n in_o another_o line_n some_o peradventure_o may_v answer_v for_o mounseur_fw-fr des_fw-fr cartes_n that_o body_n this_o subtle_a body_n which_o he_o suppose_v to_o run_v through_o all_o thing_n be_v stiff_a and_o no_o way_n pliable_a but_o that_o be_v so_o repugnant_a to_o the_o nature_n of_o rarity_n and_o so_o many_o insuperable_a inconvenience_n follow_v out_o of_o it_o as_o i_o can_v imagine_v he_o will_v own_v it_o and_o therefore_o i_o will_v not_o spend_v any_o time_n in_o reply_v thereto_o we_o must_v therefore_o seek_v some_o other_o cause_n of_o the_o refraction_n of_o light_n which_o be_v make_v at_o the_o entrance_n of_o it_o into_o a_o diaphanous_a body_n which_o be_v plain_o as_o we_o say_v before_o because_o the_o ray_n strike_v against_o the_o inside_n of_o a_o body_n it_o can_v penetrate_v turn_v by_o reflection_n towards_o that_o side_n on_o which_o the_o illuminant_fw-la stand_n 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little_a a_o part_n in_o the_o two_o different_a surface_n as_o serve_v to_o reflect_v a_o ray_n of_o light_n for_o where_o the_o difference_n be_v insensible_a in_o the_o cause_n there_o likewise_o the_o difference_n be_v so_o little_a in_o the_o effect_n as_o sense_n can_v judge_v of_o they_o which_o be_v as_o much_o as_o be_v requisite_a to_o our_o purpose_n now_o since_o in_o the_o mathematical_a supposition_n the_o point_n where_o the_o reflection_n be_v make_v be_v indifferent_a to_o both_o the_o surface_n it_o follow_v that_o it_o import_v not_o whether_o superficies_n you_o take_v to_o know_v the_o quality_n of_o reflection_n by_o this_o principle_n then_o be_v settle_v that_o the_o reflection_n must_v follow_v the_o nature_n of_o the_o tangent_fw-la surface_v and_o it_o be_v prove_v that_o in_o plain_a surface_n it_o will_v happen_v as_o we_o have_v explicate_v it_o follow_v that_o in_o any_o crooked_a supersicy_n of_o what_o figure_n soever_o the_o same_o also_o will_v happen_v now_o see_v we_o have_v former_o declare_v that_o refraction_n be_v but_o a_o certain_a kind_n of_o reflection_n what_o we_o have_v say_v here_o of_o reflection_n may_v be_v apply_v to_o refraction_n but_o there_o remain_v yet_o untouched_a one_o affection_n more_o of_o refraction_n which_o be_v that_o some_o diaphanous_a body_n in_o their_o inward_a pore_n part_n reflect_v more_o than_o other_o which_o be_v that_o we_o call_v refraction_n as_o experience_n show_v we_o concern_v which_o effect_n we_o be_v to_o consider_v that_o diaphanous_a body_n may_v in_o their_o composition_n have_v two_o difference_n for_o some_o be_v compose_v of_o great_a part_n and_o great_a pore_n other_o of_o lesser_a part_n and_o lesser_a pore_n it_o be_v true_a there_o may_v be_v other_o combination_n of_o pore_n and_o part_n yet_o by_o these_o two_o the_o rest_n may_v be_v esteem_v as_o for_o the_o first_o combination_n we_o see_v that_o because_o the_o pore_n be_v great_a a_o great_a multitude_n of_o part_n of_o light_n may_v pass_v together_o through_o one_o poor_a and_o because_o the_o part_n be_v great_a likewise_o a_o great_a multitude_n of_o ray_n may_v reflect_v from_o the_o same_o part_n and_o find_v the_o same_o passage_n quite_o throughout_o the_o diaphanous_a body_n on_o the_o contrary_a side_n in_o the_o second_o combination_n where_o both_o the_o pore_n and_o the_o part_n of_o the_o diaphanous_a body_n be_v little_a the_o light_n must_v be_v but_o little_a that_o find_v the_o same_o passage_n now_o that_o refraction_n be_v great_a or_o lesser_a happen_v two_o way_n for_o it_o be_v either_o when_o one_o diaphanous_a body_n reflect_v light_a at_o more_o angle_n than_o another_o and_o by_o consequence_n in_o a_o great_a extent_n of_o the_o superficies_n or_o else_o when_o one_o body_n reflect_v light_a from_o the_o
same_o point_n of_o incidence_n in_o a_o short_a line_n and_o a_o great_a angle_n than_o another_o do_v in_o both_o these_o way_n it_o be_v apparent_a that_o a_o body_n compose_v of_o great_a part_n and_o great_a pore_n exceed_v body_n of_o the_o opposite_a kind_n for_o by_o reason_n that_o in_o the_o first_o kind_n more_o light_a may_v beat_v against_o one_o part_n a_o body_n in_o which_o that_o happen_v will_v wake_v a_o appearance_n from_o a_o further_a part_n of_o its_o superficies_n whereas_o in_o a_o body_n of_o the_o other_o sort_n the_o light_n that_o beat_v against_o one_o of_o the_o little_a part_n of_o it_o will_v be_v so_o little_a as_o it_o will_v present_o vanish_v again_o because_o in_o the_o first_o the_o part_n at_o the_o incidence_n be_v great_a the_o surface_n from_o which_o the_o reflection_n be_v make_v inward_o have_v more_o of_o a_o plain_a and_o straight_o superficies_n and_o consequent_o reflect_v at_o a_o great_a angle_n than_o that_o who_o superficies_n have_v more_o of_o incline_v but_o we_o must_v not_o pass_v from_o this_o question_n without_o look_v a_o little_a into_o the_o nature_n of_o those_o body_n in_o which_o refraction_n be_v light_a make_v for_o if_o they_o as_o well_o as_o the_o immediate_a cause_n of_o refraction_n likewise_o favour_v we_o it_o will_v not_o a_o little_a advance_v the_o certainty_n of_o our_o determination_n to_o this_o purpose_n we_o may_v call_v to_o mind_n how_o experience_n show_v we_o that_o great_a refraction_n be_v make_v in_o smoke_n and_o mist_n and_o glass_n and_o thick-bodied_n water_n and_o monsir_fw-fr des_fw-fr cartes_n add_v certain_a oil_n and_o spirit_n or_o strong_a water_n now_o most_o of_o these_o we_o see_v be_v compose_v of_o little_a consistent_a body_n swim_v in_o another_o liquid_a body_n as_o be_v plain_a in_o smoke_n and_o mist_n for_o the_o little_a bubble_n which_o rise_v in_o the_o water_n before_o they_o get_v out_o of_o it_o and_o that_o be_v smoke_n when_o they_o get_v into_o the_o air_n assure_v we_o that_o smoke_n be_v nothing_o else_o but_o a_o company_n of_o little_a round_a body_n swim_v in_o the_o air_n and_o the_o round_a consistence_n of_o water_n upon_o herb_n leau_n &_o twig_n in_o a_o rind_n or_o dew_n give_v we_o also_o to_o understand_v that_o a_o mist_n be_v likewise_o a_o company_n of_o little_a round_a body_n that_o sometime_o stand_v sometime_o float_v in_o the_o air_n as_o the_o wind_n drive_v they_o our_o very_a eye_n bear_v witness_n to_o we_o that_o the_o thick_a sort_n of_o water_n be_v full_a of_o little_a body_n which_o be_v the_o cause_n of_o their_o not_o be_v clear_a as_o for_o glass_n the_o blow_n of_o it_o convince_v that_o the_o little_a dart_n of_o fire_n which_o pierce_v it_o every_o way_n do_v natural_o in_o the_o melt_a of_o it_o convert_v it_o into_o little_a round_a hollow_a body_n which_o in_o their_o cool_n must_v settle_v into_o part_n of_o the_o like_a figure_n then_o for_o crystal_n and_o other_o transparent_a stone_n which_o be_v find_v in_o cold_a place_n it_o can_v be_v otherwise_o but_o that_o the_o nature_n of_o cold_a pierce_a into_o the_o main_a body_n and_o contract_v every_o little_a part_n in_o itself_o this_o contraction_n must_v needs_o leave_v vacant_a pore_n between_o part_n and_o part_n and_o that_o such_o transparent_a stone_n as_o be_v make_v by_o heat_n have_v the_o like_a effect_n and_o property_n may_v be_v judge_v out_o of_o what_o we_o see_v in_o brick_n and_o tile_n which_o be_v leave_v full_a of_o hole_n by_o the_o operation_n of_o the_o fire_n and_o i_o have_v see_v in_o bone_n that_o have_v lie_v a_o long_a time_n in_o the_o sun_n a_o multitude_n of_o sensible_a little_a pore_n close_o to_o one_o another_o as_o if_o they_o have_v be_v former_o stack_n all_o over_o with_o subtle_a sharp_a needle_n as_o close_o as_o they_o can_v be_v thrust_v in_o by_o one_o another_o the_o chemical_a oil_n and_o spirit_n which_o monsir_fw-fr des_fw-fr cartes_n speak_v of_o be_v likely_a to_o be_v of_o the_o same_o composition_n since_o such_o use_n to_o be_v extract_v by_o violent_a fire_n for_o a_o violent_a fire_n be_v make_v by_o the_o conjunction_n of_o many_o ray_n together_o and_o that_o must_v needs_o cause_v great_a pore_n in_o the_o body_n it_o work_v on_o and_o the_o stick_a nature_n of_o these_o spirit_n be_v capable_a of_o conserve_n they_o out_o of_o all_o these_o observation_n it_o follow_v that_o the_o body_n in_o which_o great_a refraction_n happen_v be_v compound_v as_o we_o have_v say_v of_o great_a part_n and_o great_a pore_n and_o therefore_o by_o only_o take_v light_n to_o be_v such_o a_o body_n as_o we_o have_v describe_v it_o where_o we_o treat_v of_o its_o nature_n it_o be_v evident_a the_o effect_n we_o have_v express_v must_v necessary_o follow_v by_o way_n of_o reflection_n and_o refraction_n be_v nothing_o else_o but_o a_o certain_a kind_n of_o reflection_n which_o last_o assertion_n be_v likewise_o convince_v out_o of_o this_o that_o the_o same_o effect_n proceed_v from_o reflection_n as_o from_o refraction_n for_o by_o reflection_n a_o thing_n may_v be_v see_v great_a than_o it_o be_v in_o a_o different_a place_n from_o the_o true_a one_o where_o it_o be_v colour_n may_v be_v make_v by_o reflection_n as_o also_o gloat_a light_n and_o fire_n likewise_o and_o peradventure_o all_o other_o effect_n which_o be_v cause_v by_o refraction_n may_v as_o well_o as_o these_o be_v perform_v by_o reflection_n and_o therefore_o it_o be_v evident_a they_o must_v be_v of_o the_o same_o nature_n since_o child_n be_v the_o resemblance_n of_o their_o parent_n chap._n fourteen_o of_o the_o composition_n quality_n and_o generation_n of_o mix_a body_n have_v now_o declare_v the_o virtue_n by_o which_o fire_n and_o earth_n work_v upon_o one_o another_o and_o upon_o the_o rest_n of_o the_o element_n it_o which_o be_v by_o light_n and_o the_o motion_n we_o have_v discourse_v of_o our_o task_n shall_v be_v in_o this_o chapter_n 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air_n or_o other_o cold_a body_n to_o thicken_v and_o condense_a as_o above_o we_o mention_v of_o syrup_n and_o jelly_n and_o so_o they_o be_v bring_v to_o stick_v firm_o together_o in_o like_a manner_n we_o see_v that_o when_o two_o metal_n be_v heat_v till_o they_o be_v almost_o bring_v to_o run_v and_o then_o be_v press_v together_o by_o the_o hammer_n they_o become_v one_o continue_a body_n the_o like_a we_o see_v in_o glass_n the_o like_a in_o wax_n and_o in_o divers_a other_o thing_n onthe_n contrary_a side_n when_o a_o break_a stone_n be_v to_o be_v piece_v together_o the_o piece_n of_o it_o must_v be_v wet_v and_o the_o cement_n must_v be_v likewise_o moisten_v and_o then_o join_v they_o apt_o and_o dry_v they_o they_o stick_v fast_o together_o glue_n be_v moisten_v that_o it_o may_v by_o dry_v afterward_o hold_v piece_n of_o wood_n together_o and_o the_o spectale-maker_n have_v a_o composition_n which_o must_v be_v both_o heat_v and_o moisten_v to_o join_v to_o handle_n of_o 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