whereupon the reflex rayes issue unitedly towards one and the same place but the rest of the pavement which is dry hath its protuberances that is an innumerable variety of inclinations in its smallest particles whereupon the reflections of the light scatter towards all parts but more weakly than if they had gone all united together and therefore the same sheweth almost all alike beheld several wayes but far lesse clear than the moistned brick I conclude therefore that the surface of the Sea beheld from the Moon in like manner as it would appear most equal the Islands and Rocks deducted so it would shew lesse clear than that of the Earth which is montanous and uneven And but that I would not seem as the saying is to harp too much on one string I could tell you that I have observed in the Moon that secondary light which I told you came to her from the reflection of the Terrestrial Globe to be notably more clear two or three dayes before the conjunction than after that is when we see it before break of day in the East than when it is seen at night after Sun-set in the West of which difference the cause is that the Terrestrial Hemisphere which looks towards the Eastern Moon hath little Sea and much Land to wit all Asia whereas when it is in the West it beholds very great Seas that is the whole Atlantick Ocean as far as America An Argument sufficiently probable that the surface of the water appears lesse splendid than that of the Earth SIMPL. So that perhaps you believe those great spots discovered in the face of the Moon to be Seas and the other clearer parts to be Land or some such thing SALV This which you ask me is the beginning of those incongruities which I esteem to be between the Moon and the Earth out of which it is time to dis-ingage our selves for we have stayed too long in the Moon I say therefore that if there were in nature but one way onely to make two superficies illustrated by the Sun to appear one more clear than the other and that this were by the being of the one Earth and the other Water it would be necessary to say that the surface of the Moon were part earthy and part aquatick but because we know many wayes to produce the same effect and others there may be which we know not of therefore I dare not affirm the Moon to consist of one thing more than another It hath been seen already that a silver plate boiled being toucht with the Burnisher becometh of white obscure that the moist part of the Earth shews more obscure than the dry that in the tops of Hills the woody parts appear more gloomy than the naked and barren which hapneth because there falleth very much shadow among the Trees but the open places are illuminated all over by the Sun And this mixtion of shadow hath such operation that in tufted velvet the silk which is cut is of a far darker colour than that which is not cut by means of the shadows diffused betwixt thred and thred and a plain velvet shews much blacker than a Taffata made of the same silk So that if there were in the Moon things which should look like great Woods their aspect might represent unto us the spots which we discover alike difference would be occasioned if there were Seas in her and lastly nothing hindreth but that those spots may really be of an obscurer colour than the rest for thus the snow makes the mountains shew brighter That which is plainly observed in the Moon is that its most obscure parts are all plains with few rises and bancks in them though some there be the rest which is of a brighter colour is all full of rocks mountains hillocks of spherical and other figures and in particular round about the spots are very great ledges of mountains That the spots be plain superficies we have assured proof in that we see how that the term which distinguisheth the part illuminated from the obscure in crossing the spots makes the intersection even but in the clear parts it shews all craggy and shagged But I know not as yet whether this evennesse of superficies may be sufficient of it self alone to make the obscurity appear and I rather think not Besides I account the Moon exceeding different from the Earth for although I imagine to my self that those are not idle and dead Regions yet I affirm not that there are in them motion and life much less that there are bred plants animals or other things like to ours but if such there be they should nevertheless be very different and remote from our imagination And I am induced so to think because in the first place I esteem that the matter of the Lunar Globe consists not of Earth and Water and this alone sufficeth to take away the generations and alterations resembling ours but now supposing that there were in the Moon Water and Earth yet would they not produce plants and animals like to ours and this for two principal reasons The first is that unto our productions there are required so many variable aspects of the Sun that without them they would all miscarry now the habitudes of the Sun towards the Earth are far different from those towards the Moon We as to the diurnal illumination have in the greater part of the Earth every twenty four hours part day and part night which effect in the Moon is monethly and that annual declination and elevation of the Sun in the Zodiack by which it produceth diversity of Seasons and inequality of dayes and nights are finished in the Moon in a moneth and whereas the Sun to us riseth and declineth so much that from the greatest to the least altitude there is a difference of almost 47 degrees for so much is the distance from one to the other Tropick this is in the Moon but ten degrees only or little more namely as much as the greatest Latitudes of the Dragon on each side the Ecliptick Now consider what effect the Sun would have in the torrid Zone should it continually for fifteen dayes together beam forth its Rayes upon it which without all question would destroy plants herbs and living creatures and if it should chance that there were any production it would be of herbs plants and creatures very different from those which are now there Secondly I verily believe that in the Moon there are no rains for if Clouds should gather in any part thereof as they do about the Earth they would thereupon hide from our sight some of those things which we with the Telescope behold in the Moon and in a word would some way or other change its Phaenomenon an effect which I could never by long and diligent observations discover but alwayes beheld it in a even and pure serenity SAGR. To this may be answered either that there might be great
strange and unlikely to many others The point is that I say That by raising the level of Fiume morto one half Brace onely at its Mouth it will penipenitrate into Serchio farther than it would into the Sea it shall cause the waters to rise three or perhaps more Braces upon the fields towards Pisa and still more by degrees as they shall recede farther from the Sea-side and thus there will follow very great Innundations and considerable mischiefs And to know that this is true you are to take notice of an accident which I give warning of in my discourse of the Measure of Running Waters where also I give the reason thereof Coroll 14. The accident is this That there coming a Land-Flood for example into Arno which maketh it to rise above its ordinary Mouth within Pisa or a little above or below the City six or seven Braces this same height becometh alwaies lesser and lesser the more we approach towards the Sea-side insomuch that near to the Sea the said River shall be raised hardly half a Brace Whence it followeth of necessary consequence that should I again be at the Sea-side and knowing nothing of what hapneth should see the River Arno raised by the accession of a Land-flood one third of a Brace I could certainly infer that the same River was raised in Pisa those same six or seven Braces And that which I say of Arno is true of all Rivers that fall into the Sea Which thing being true it is necessary to make great account of every small rising that Fiume morto maketh towards the Sea-side by falling into Serchio For although the rising of Fiume morto by being to disgorge its Waters into Serchio towards the Sea were onely a quarter of a Brace we might very well be sure that farr from the Sea about Pisa and upon those fields the rise shall be much greater and shall become two or three Braces And because the Countrey lyeth low that same â—ise will cause a continual Innundation of the Plains like as it did before I caused the Mouth to be opened into the Sea And therefore I conclude that the Mouth of Fiume morto ought by no means to be opened into Serchio but ought to be continued into the Sea using all diligence to keep it open after the manner aforesaid so soon as ever the Wind shall be laid And if they shall do otherwise I confidently affirm that there will daily follow greater damages not onely in the Plains but also in the wholesomness of the Air as hath been seen in times past And again It ought with all care to be procured that no waters do by any means run or fall from the Trench of Libra into the Plain of Pisa for these Waters being to discharge into Fiume morto they maintain it much higher than is imagined according to that which I have demonstrated in my consideration upon the state of the Lake of Venice I have said but little but I speak to you who understandeth much and I submit all to the most refined judgment of our most Serene Prince Leopold whose hands I beseech you in all humility to kiss in my name and implore the continuance of his Princely favour to me and so desiring your prayers to God for me I take my leave Rome 1. Feb. 1642. Your most affectionate Servant D. BENEDETTO CASTELLI The answer to a Letter written by BARTOLOTTI touching the difficultyes observed The former part of the Letter is omitted and the discourse beginneth at the first Head ANd first I say Whereas I suppose that the level of the Serchio is higher than that of Fiume morto this is most true at such time as the waters of Fiume morto are discharged into the Sea but I did never say that things could never be brought to that pass as that the level of Fiume morto should be higher than Serchio and so I grant that it will follow that the waters of Fiume morto shall go into Serchio and it s very possible that the Drain of Fiume morto into Serchio may be continuate and I farther grant that its possible that the Serchio doth never disgorge thorow Fiume morto towards Pisa Nay I will yet farther grant that it might have happened that Fiume morto might have had such a fall into Serchio as would have sufficed to have turned Mills But then I add withall that the Plains of Pisa and the City it self must be a meer Lake 2. Signore Bartolotti saith confidently that when the Sea swelleth by the South-West or other Winds the level of Serchio in the place marked A in the Platt distant about 200. Braces riseth very little But that Fiume morto in D and in E many miles more up into Land riseth very much and that certain Fishermen confirm this and shew him the signes of the rising of the Water I grant it to be very true and I have seen it with my own eyes But this cometh to pass when the Mouth of Fiume morto is stopt up by the Sea as I shall shew by and by And this rising near the Sea-side is of no considerable prejudice to the fields And this is as much as I find to be true in the assertion of Signore Bartolotti without his confirming it by any other proof as indeed it needs none That the level of Fiume morto riseth in E and many miles farther upwards it riseth much nor did I ever affirm the contrary 3. Concerning the difficulty of opening the Mouth of Fiume morto into the Sea that which Il Castellano saith is most certain namely That at the entrance upon the opening of the Mouth it is necessary to make a deep Trench But I say that at that time it is difficult to open it unless upon great occasions for that the difficulty proceedeth from the waters of Fiume morto being low and the fields drained 4. As to the particular of the Causes that you tell me men press so much unto the most Serene Grand Duke and to the Prince I have not much to say because it is not my profession nor have I considered of the same Yet I believe that when the Prince and his Highnesse see the benefit of his People and Subjects in one scale of the Ballance and the accomodation of Huntsmen in the other his Highnesse will incline to the profit of his subjects such have I alwayes found his Clemency and Noblenesse of minde But if I were to put in my vote upon this businesse I would say that the points of Spears and the mouths of Guns the yelping of Dogs the wilynesse of Huntsmen who run thorow and narrowly search all those Woods Thickets and Heathes are the true destroyers of Bucks and Boares and not a little Salt-water which setleth at last in some low places and spreadeth not very far Yet neverthelesse I will not enter upon any such point but confine my self solely to the businesse before me 5. That Experiment of joyning together the water
the Earth need no more but motion and light Celestial bodies want an interchangeable operation upon each other Alterability c. are not in the whole Terrestrial Globe but in some of its parts Coelestial bodies alterable in their outward parts The generations mutations happening in the Earth are all for the good of Man The Moon hath no generatings of things like as we have nor is it inhabited by men In the Moon may be a generation of things different from ours He that had not heard of the Element of Water could never fancy to himself Ships and Fishes There may be substances in the Moon very different from ours The First resemblance between the Moon and Earth which is that of figure is proved by the manner of being illuminated by the Sun The Second conformity is the Moons being opacous as the Earth 〈…〉 Moon is 〈◊〉 and 〈…〉 as the Earth Fourthly The Moon is distinguished into two different parts for clarity and obscurity as the Terrestrial Globe into Sea and Land The surface of the Sea would shew at a distance more obscure than that of the Earth Fiftly Mutation of figures in the Earth like to those of the Moon and made with the same periods All the Earth seeth half onely of the Moon the half onely of the Moon seeth all the Earth From the Earth we see more than half the Lunar Globe Two spots in the Moon by which it is perceived that she hath respect to the centre of the Earth in her motion Sixthly The Earth and Moon interchangeably do illuminate Light reflected from the Earth into the Moon Seventhly The Earth and Moon do mutually eclipse The second clarity of the Moon esteemed to be its native light The Earth unable to reflect the Suns raies The substance of the Heavens impenetrable according to Aristotle The substance of Heaven intangible The superficies of the Moon more sleek than any Looking-glass The eminencies and cavities in the Moon are illusions of its opacous and perspicuous parts * Il Saggiatore Lettere Solari two Treatises of Galilaeus It is proved at large that the Moons surface is sharp Flat Looking-glasses cast forth the reflection towards but one place but the spherical every way The sphere of Activity greater in the Coelestial bodies than in Elementary The Moon if it were smooth like a spherical glasse would be invisible The small body of the stars fringed round about with rays appeareth very much bigger than plain and naked and in its native clarity The reflex light of uneven bodies is more universal than that of the smooth why The Moon if it were smooth and sleâ—k would be invisible Some write what they understand not and therefore understand not what they write Diamonds ground to divers sides why Silver 〈◊〉 wished appears maâ—e obscuâ—e 〈◊〉 the not burnished why Burnish'd Steel 〈◊〉 from one 〈…〉 very 〈…〉 from 〈◊〉 very obscure The more rough superficies make greater reflection of light than the less rough Perpendicular rays illuminate more than the oblique and why The more oblique Rayes illuminate less and why Perfect 〈◊〉 why ascribed is Coelestial bodies by the Peripateticks The Figure is not the cause of incorruptibiliâ—r but of longer duration Corruptibility admits of more or lesse so doth not incorruptibiliâ—y The perfection of figure operateth in corruptible bodies but not in the eternal If the spherical figure conferreth eternity all bodies would be eternal Mother of Pearl accommodated to imitate the apparent unevennesses of the Moons surface The apparent unevennesses of the Moon cannot be imitated by way of more and less opacity perspicuity The various aspects of the Moon imitable with any opacous matter Various appearances from which the Moons montuosity is argued The Moon appears brighter by night than by day The Moon beheld in the day time is like to a little cloud Clouds are no less apt than the Moon to be illuminated by the Sun A wall illuminated by the Sun compared to the Moon shineth no less than it The third reflection of a Wall illuminates more than the first of the Moon The light of the Moon weaker than that of the twilight Lum nous bodies appear the brighter in an obscurer ambient * By the Moons two Quadratures you are to understand its first and last quarters as Astrologers call them The secondary light of the Moon caused by the Sun according to some * Tendono le parete al commune It s all one whether opinions be new to men or men new to opinions * Contestare falsly rendered in the Latine Translation contentare The secondary light of the Moâ—n appears in form of a Ring that is to say bright in the extreme circumference and not â—n the midst and why The way to observe the secondary light of the Moon The Moons Discus in a solar Eclipse can be seen onely by privation The Author of the Book of conclusions accommodates the things to his purposes and not his purposes to the things A jest put upon one that would sell a certain secret for holding correspondency with a person a thousand miles off The Earth may reciprocally operate upon Coelestial bodies with its light Affinity between the Earth Moon in respect of their vicinity Solidity of the Lunar Globe argued from its being montainous The Seas reflection of light much weaker than that of the Earth An experimenâ— to prove the reflection of the Water lesse clear than that of the Land The secondary light of the Moon clearer before the conjunction than after The obscurer parts of the Moon are plains and the more bright mountainous Long ledges of mountains about the spots of the Moon There are not generated in the Moon things like to ours but if there be any productions they are very different The Moon not composed of Water and Earth Those aspects of the Sun necessary for our generations are not so in the Moon Natural dayes in the Moon are of a Moneth long To the Moon the Sun ascendeth and declineth with a difference of ten degrees and to the Earth of forty seven degrees There are no rains in the Moon The having a perfect knowledg of nothing maketh some believe they understand all things The answer of the Oracle true in judging Socrates the wisest of his time Divine Wisdom infinitely infinite Buonarruotti a statuary of admirable ingenitity Man understandeth very well intensivè but little extensivè Gâ—ds manner of knowing different from that of men Humane understanding done by raciocination Definitions contein virtually all the passions of the things defined Infinite Passions are perhaps but one onely The discourses which humane reason makes in a certain time the Divine Wisdom resolveth in a moment that is hath them alwayes present The wit of man admirably acute The invention of writing stupendious above all others * For of so many only the Italian Alphabet consists The original of the Nerves according to Aristotle and according to Phisicians The ridiculous answer of
of our mountains in a thicknesse of one mile onely SALV The very mountains of the Moon themselves are a proof thereof which percussed on one side of the Sun do cast on the contrary side very dark shadows terminate and more distinct by much than the shadows of ours but had these mountains been diaphanous we could never have come to the knowledg of any unevennesse in the superficies of the Moon not have seen those luminous montuosities distinguished by the terms which separate the lucid parts from the dark much lesse should we see this same term so distinct if it were true that the Suns light did penetrate the whole thicknesse of the Moon yea rather according to the Authors own words we should of necessity discern the passage and confine between the part of the Sun seen and the part not seen to be very confused and mixt with light and darknesse for that that matter which admits the passage of the Suns rayes thorow a space of two thousand miles must needs be so transparent that it would very weakly resist them in a hundredth or lesser part of that thicknesse neverthelesse the term which separateth the part illuminated from the obscure is incident and as distinct as white is distinct from black and especially where the Section passeth through the part of the Moon that is naturally more clear and montanous but where the old spots do part which are certain plains that by means of their spherical inclination receive the rayes of the Sun obliquely there the term is not so distinct by reason of the more dimme illumination That lastly which he saith how that the secondary light doth not diminish and languish according as the Moon encreaseth but conserveth it self continually in the same efficacy is most false nay it is hardly seen in the quadrature when on the contrary it should appear more splendid and be visible after the crepusculum in the dark of night Let us conclude therefore that the Earths reflection is very strong upon the Moon and that which you ought more to esteem we may deduce from thence another admirable congruity between the Moon and Earth namely that if it be true the Planets operate upon the Earth by their motion and light the Earth may probably be no lesse potent in operating reciprocally upon them with the same light and peradventure motion also And though it should not move yet may it retain the same operation because as it hath been proved already the action of the light is the self same I mean of the light of the Sun reflected and motion doth nothing save only vary the aspects which fall out in the same manner whether we make the Earth move and the Sun stand still or the contrary SIMPL. None of the Philosophers are found to have said that these inferiour bodies operate on the Coelestial nay Aristotle affirmes the direct contrary SALV Aristotle and the rest who knew not that the Earth and Moon mutually illuminated each other are to be excused but they would justly deserve our censure if whilest they desire that we should grant and believe with them that the Moon operateth upon the Earth with light they should deny to us who have taught them that the Earth illuminates the Moon the operation the Earth hath on the Moon SIMPL. In short I find in my self a great unwillingnesse to admit this commerce which you would perswade me to be betwixt the Earth and Moon placing it as we say amongst the number of the Stars for if there were nothing else the great separation and distance between it and the Coelestial bodies doth in my opinion necessarily conclude a vast disparity between them SALV See Simplicius what an inveterate affection and radicated opinion can do since it is so powerful that it makes you think that those very things favour you which you produce against your self For if separation and distance are accidents sufficient to perswade with you a great diversity of natures it must follow that proximity and contiguity import similitude Now how much more neerer is the Moon to the Earth than to any other of the Coelestial Orbs You must acknowledg therefore according to your own concession and you shall have other Philosophers bear you company that there is a very great affinity betwixt the Earth and Moon Now let us proceed and see whether any thing remains to be considered touching those objections which you made against the resemblances that are between these two bodies SIMPL. It rests that we say something touching the solidity of the Moon which I argued from its being exquisite smooth and polite and you from its montuosity There is another scruple also comes into my mind from an opinion which I have that the Seas reflection ought by the equality of its surface to be rendered stronger than that of the Earth whose superficies is so rough and opacous SALV As to the first objection I say that like as among the parts of the Earth which all by their gravity strive to approach the nearest they can possible to the center some of them alwayes are more remote from it than the rest as the mountains more than the valleys and that by reason of their solidity and firmnesse for if they were of fluid they would be even so the seeing some parts of the Moon to be elevated above the sphericity of the lower parts argueth their hardnesse for it is probable that the matter of the Moon is reduced into a spherical form by the harmonious conspiration of all its parts to the same sentense Touching the second doubt my thinks that the particulars already observed to happen in the Looking-glasses may very well assure us that the reflection of light comming from the Sea is far weaker than that which cometh from Land understanding it alwayes of the universal reflection for as to that particular on which the water being calm casteth upon a determinate place there is no doubt but that he who shall stand in that place shall see a very great reflection in the water but every way else he shall see the surface of the Water more obscure than that of the Land and to prove it to your senses let us go into yonder Hall and power forth a little water upon the Pavement Tell me now doth not this wet brick shew more dull than the other dry ones Doubtlesse it doth and will so appear from what place soever you behold it except one onely and this is that way which the light cometh that entereth in at yonder window go backwards therefore by a little and a little SIMPL. Here I see the west part shine more than all the rest of the pavement and I see that it so hapneth because the reflection of the light which entereth in at the window cometh towards me SALV That moisture hath done no more but filled those little cavities which are in the brick with water and reduced its superficies to an exact evenesse
answer proportionably as if descended from the same place 19 Immense Magnitudes and Numbers are incomprehensible by our Vnderstandings 332 MARS Mars necessarily includeth within its Orb the Earth and also the Sun 298 Mars at its Opposition to the Sun seems sixty times bigger than towards the Conjunction 298 Mars makes an hot assault upon the Copernican Systeme 302 MARSILIUS Signor Caesar Marsilius observeth the Meridian to be moveable 422 MEDICEAN The time of the Medicean Planets conversions 101 The Medicean Planets are as it were four Moons about Jupiter 307 MEDITERRAN Mediterranean Sea made by the Seperation of Abila and Calpen 35 The Voyages in the Mediterran from East to West are made in shorter times than from West to East 403 MERCURY The Revolution of Mercury concluded to be about the Sun within the Orb of Venus 298 Mercury admitteth not of clear Observations 307 MOON The Moon hath no Generation of things like as we have nor is it inhabited by Men. 47 In the Moon may be a Generation of things different from ours 47 There may be Substances in the Moon very different from ours 48 The first resemblance between the Moon and Earth which is that of Figure is proved by their manner of being illuminated by the Sun 48 The second resemblance is the Moons being Opacous as the Earth 48 The third resemblance is the Moons being Dense and Mountainous as the Earth 49 The fourth resemblance is the Moons being distinguished into two different parts for Clarity and Obscurity as the Terrestrial Globe into Sea and Land 49 The fifth resemblance is Mutation of Figures in the Earth like those of the Moon and made with the same Periods 49 All the Earth seeth halfe onely of the Moon and halfe onely of the Moon seeth all the Earth 51 Two Spots in the Moon by which it is perceived that She hath respect to the Centre of the Earth in her Motion 52 Light reflected from the Earth into the Moon 52 The sixth resemblance is that the Earth and Moon interchangeably illuminate 53 The seventh resemblance is that the Earth and Moon interchangeably Ecclipse 53 The Secondary Clarity of the Moon esteemed to be its Native Light 54 The Surface of the Moon more sleek then any Looking-Glasse 55 The eminencies and Cavities in the Moon are illusions of its Opacous and Perspicuous parts 55 The Moons Surface is sharp as is largely proved 57 The Moon if it it were sleek like a Spherical Looking-Glasse would be invisible 60 62 The apparent Vnevennesses of the Moons Surface aptly represented by Mother of Pearl 70 The apparent Vnevennesses of the Moon cannot be imitated by way of more and lesse Opacity and Perspicuity 71 The various Aspects of the Moon imitable by any Opacous matter 71 Sundry Phaenomena from whence the Moons Montuosity is argued 71 The Moon appears brighter by night than by day 72 The Moon beheld in the day time is like to a little Cloud 72 Clouds are no lesse apt than the Moon to be illuminated by the Sun 73 A Wall illuminated by the Sun compared to the Moon shines no lesse than it 73 The third reflection of a Wall illuminates more than the first of the Moon 74 The Light of the Moon weaker than that of the Twy-light 74 The secondary Light of the Moon caused by the Sun according to some 76 The secondary Light of the Moon appears in form of a Ring i. e. bright in the extreme Circumference and not in the midst and why 77 The secondary Light of the Moon how it is to be observed 78 The Moons Discus in a Solar Eclipse can be seen onely by Privation 78 Solidity of the Moons Globe argued from its being Mountainous 81 The secondary Light of the Moon clearer before the Conjunction than after 82 The obscurer parts of the Moon are Plains and the more bright Mountains 83 Long Ledges of Mountains about the Spots of the Moon 83 There are not generated in the Moon things like to ours but if there be any Productions they are very different 83 The Moon not composed of Water and Earth 83 Those Aspects of the Sun necessary for our Productions are not so in the Moon 83 Natural Dayes in the Moon are of a Moneth long 84 To the Moon the Sun declineth with a difference of ten Degrees and to the Earth of Forty seven Degrees 84 There are no Rains in the Moon 84 The Moon cannot seperate from the Earth 295 The Moons Orbe environeth the Earth but not the Sun 299 The Moon much disturbeth the Order of the other Planets 362 The Moons Motion principally sought in the Account of Eclipses 416 The Moon is an Aethereal Earth 492 MOTION and Motions Motion of Projects Vide Projects The Conditions and Attributes which differ the Celestial and Elementary Bodies depend on the Motions assigned them by Aristotle 25 Peripateticks improperly assign those Motions to the Elements for Natural with which they never were moved and those for Preternatural with which they alwayes move 33 Motion as to the things that move thereby is as if it never were and so farre operates as it relates to things deprâ—ved of Motion 98 Motion cannot be made without its moveable Subject 104 Motion and Rest principal Accidents in Nature 112 Two things necessary for the perpetuating of a Motion an unlimited Space and an incorruptible Moveable 117 Disparity in the Motions of a Stone falling from the Round Top of a Ship and from the Top of a Tower 123 The Motion of grave Pendula might be perpetuated impediments being removed 203 Whence the Motion of a Cadent Body is collected 224 The Motion of the Eye argueth the Motion of the Body looked on 224 Different Motions depending on the Fluctuation of the Ship 226 Our Motion may be either interne or externe and yet we never perceive or feel it 229 The Motion of a Boat insensible to those that are within it as to the Sense of Feeling 229 The Motion of a Boat sensible to Sight joyned with Reason 229 A simple Body as the Earth cannot move with three several Motions 231 Motion and Rest are more different than Right Motion and Circular 237 One may more rationally ascribe to the Earth two intern Principles to the Right and Circular Motion than two to Motion and Rest. 237 The diversity of Motions helpeth us to know the Diversity of Natures 237 Bodies of the same kind have Motions that agree in kinde 239 The greatnesse and smallnesse of the Body make a difference in Motion and not in Rest. 243 Every pensile and librated Body carried round in the Circumference of a Circle acquireth of it self a Motion in it self equal to the same 362 Two sorts of Motion in the containing Vessel may make the containing Water to rise and fall 387 An Accident in the Earths Motion impossible to be imitated 392 ABSOLUTE MOTION Things said to move according to certain of their parts and not according to their whole may not be said to