Newton, Isaac, Philosophia naturalis principia mathematica, 1713

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                    <pb xlink:href="039/01/352.jpg" pagenum="324"/>
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                  non pauciorum quam 12, non plurium quam 13, deſcribentes al­
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                  titudinem digitorum 182. </s>
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                  DE MOTU
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                  CORPORUM</s>
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                  <s>Per Theoriam vero hi globi cadere debuerunt tempore oſcilla­
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                  tionum 11 1/3 quamproxime. </s>
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                  <s>
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                  Exper.
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                  10. Globi quatuor pondere granorum 384 in aere &
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                  119 1/2 in aqua, ſæpe demiſſi, cadebant temporibus oſcillationum
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                  17 1/4, 18, 18 1/2 & 19, deſcribentes altitudinem digitorum 181 1/2. Et
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                  ubi ceciderunt tempore oſcillationum 19, nonnunquam audivi im­
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                  pulſum eorum in latera vaſis antequam ad fundum pervenerunt. </s>
                </p>
                <p type="main">
                  <s>Per Theoriam vero cadere debuerunt tempore oſcillationum
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                  15 3/9 quamproxime. </s>
                </p>
                <p type="main">
                  <s>
                    <emph type="italics"/>
                  Exper.
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                  11. Globi tres æquales, pondere granorum 48 in aere
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                  & (3 29/32) in aqua, ſæpe demiſſi, ceciderunt temporibus oſcillationum
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                  43 1/2, 44, 44 1/2, 45 & 46, & maxima ex parte 44 & 45, deſcribentes
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                  altitudinem digitorum 182 1/2 quamproxime. </s>
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                <p type="main">
                  <s>Per Theoriam cadere debuerunt tempore oſcillationum 46 5/9
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                  circiter. </s>
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                <p type="main">
                  <s>
                    <emph type="italics"/>
                  Exper.
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                  12. Globi tres æquales, pondere granorum 141 in aere
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                  & 4 3/8 in aqua, aliquoties demiſſi, ceciderunt temporibus oſcillatio­
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                  num 61, 62, 63, 64 & 65, deſcribentes altitudinem digitorum 182. </s>
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                  <s>Et per Theoriam cadere debuerunt tempore oſcillationum
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                  64 1/2 quamproxime. </s>
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                <p type="main">
                  <s>Per hæc Experimenta manifeſtum eſt quod, ubi globi tarde ceci­
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                  derunt, ut in experimentis ſecundis, quartis, quintis, octavis, un­
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                  decimis ac duodecimis, tempora cadendi recte exhibentur per
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                  Theoriam: at ubi globi velocius ceciderunt, ut in experimentis
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                  ſextis, nonis ac decimis, reſiſtentia paulo major extitit quam in
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                  duplicata ratione velocitatis. </s>
                  <s>Nam globi inter cadendum oſcillant
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                  aliquantulum; & hæc oſcillatio in globis levioribus & tardius ca­
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                  dentibus, ob motus languorem cito ceſſat; in gravioribus autem &
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                  majoribus, ob motus fortitudinem diutius durat, & non niſi poſt
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                  plures oſcillationes ab aqua ambiente cohiberi poteſt. </s>
                  <s>Quinetiam
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                  globi, quo velociores ſunt, eo minus premuntur a fluido ad po­
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                  ſticas ſuas partes; & ſi velocitas perpetuo augeatur, ſpatium va­
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                  cuum tandem a tergo relinquent, niſi compreſſio fluidi ſimul au­
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                  geatur. </s>
                  <s>Debet autem compreſſio fluidi (per Prop. </s>
                  <s>XXXII & XXXIII)
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                  augeri in duplicata ratione velocitatis, ut reſiſtentia ſit in eadem
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                  duplicata ratione. </s>
                  <s>Quoniam hoc non fit, globi velociores paulo
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                  minus premuntur a tergo, & defectu preſſionis hujus, reſiſtentia
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                  eorum fit paulo major quam in duplicata ratione velocitatis. </s>
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