Newton, Isaac, Philosophia naturalis principia mathematica, 1713

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                  132,645 in Medio aeris, vel grana 132,8 in vacuo; & globus qui­
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                  libet alius eſt ut exceſſus ponderis ejus in vacuo ſupra pondus ejus
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                  in aqua. </s>
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                  DE MOTU
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                  CORPORUM</s>
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                  Exper.
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                  1. Globus, cujus pondus erat 156 1/4 granorum in aere &
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                  77 granorum in aqua, altitudinem totam digitorum 112 tempore
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                  minutorum quatuor ſecundorum deſcripſit. </s>
                  <s>Et experimento repe­
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                  tito, globus iterum cecidit eodem tempore minutorum quatuor ſe­
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                  cundorum. </s>
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                  <s>Pondus globi in vacuo eſt (156 11/38)
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                  gran,
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                  & exceſſus hujus ponde­
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                  ris ſupra pondus globi in aqua eſt (79 11/38)
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                  gran.
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                  Unde prodit globi
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                  diameter 0,84224 partium digiti. </s>
                  <s>Eſt autem ut exceſſus ille ad
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                  pondus globi in vacuo, ita denſitas aquæ ad denſitatem globi,
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                  & ita partes octo tertiæ diametri globi (
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                  viz.
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                  2,24597
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                  dig.
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                  ) ad ſpa­
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                  tium 2 F, quod proinde erit 4,4256
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                  dig.
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                  Globus tempore minuti
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                  unius ſecundi, toto ſuo pondere granorum (156 11/38), cadendo in va­
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                  cuo deſcribet digitos 193 1/3; & pondere granorum 77, eodem tem­
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                  pore, abſque reſiſtentia cadendo in aqua deſcribet digitos 95,219;
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                  & tempore G, quod ſit ad minutum unum ſecundum in ſubduplicata
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                  ratione ſpatii F ſeu 2,2128
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                  dig.
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                  ad 95,219
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                  dig,
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                  deſcribet 2,2128
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                  dig.
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                  & velocitatem maximam H acquiret quacum poteſt in aqua de­
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                  ſcendere. </s>
                  <s>Eſt igitur tempus G 0″,15244. Et hoc tempore G,
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                  cum velocitate illa maxima H, globus deſcribet ſpatium 2 F digi­
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                  torum 4,4256; ideoque tempore minutorum quatuor ſecundo­
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                  rum deſcribet ſpatium digitorum 116,1245. Subducatur ſpatium
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                  1,3862944 F ſeu 3,0676
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                  dig.
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                  & manebit ſpatium 113,0569 digito­
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                  rum quod globus cadendo in aqua, in vaſe ampliſſimo, tempore
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                  minutorum quatuor ſecundorum deſcribet. </s>
                  <s>Hoc ſpatium, ob an­
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                  guſtiam vaſis lignei prædicti, minui debet in ratione quæ compo­
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                  nitur ex ſubduplicata ratione orificii vaſis ad exceſſum orificii hu­
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                  jus ſupra ſemicirculum maximum globi & ex ſimplici ratione ori­
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                  ficii ejuſdem ad exceſſum ejus ſupra circulum maximum globi, id
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                  eſt, in ratione 1 ad 0,9914. Quo facto, habebitur ſpatium 112,08
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                  digitorum, quod Globus cadendo in aqua in hoc vaſe ligneo tem­
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                  pore minutorum quatuor ſecundorum per Theoriam deſcribere
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                  debuit quamproxime. </s>
                  <s>Deſcripſit vero digitos 112 per Experi­
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                  mentum. </s>
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                <p type="main">
                  <s>
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                  Exper.
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                  2. Tres Globi æquales, quorum pondera ſeorſim erant
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                  76 1/3 granorum in aere & (5 1/16) granorum in aqua, ſucceſſive demitte­
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                  bantur; & unuſquiſque cecidit in aqua tempore minutorum ſecun­
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                  dorum quindecim, caſu ſuo deſcribens altitudinem digitorum 112. </s>
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