Newton, Isaac, Philosophia naturalis principia mathematica, 1713

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                  DE MOTU
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                  CORPORUM</s>
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                  <s>Hæc eſt reſiſtentia quæ oritur ab inertia materiæ Fluidi. </s>
                  <s>Ea
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                  vero quæ oritur ab elaſticitate, tenacitate, & frictione partium
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                  ejus, ſic inveſtigabitur.
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                  <s>Demittatur Globus ut pondere ſuo B in Fluido deſcendat;
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                  & ſit P tempus cadendi, idQ.E.I. minutis ſecundis ſi tempus
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                  G in minutis ſecundis habeatur. </s>
                  <s>Inveniatur numerus abſo­
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                  lutus N qui congruit Logarithmo 0,4342944819(2P/G), ſitque L
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                  Logarithmus numer; (N+1/N): & velocitas cadendo acquiſita erit
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                  (N-1/N+1)H, altitudo autem deſcripta erit (2PF/G)-1,3862943611 F+
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                  4,605170186LF. Si Fluidum ſatis profundum ſit, negligi poteſt
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                  terminus 4,605170186LF; & erit (2PF/G)-1,3862943611 F altitude
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                  deſcripta quamproxime. </s>
                  <s>Patent hæc per Libri ſecundi Propo­
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                  ſitionem nonam & ejus Corollaria, ex Hypotheſi quod Glo­
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                  bus nullam aliam patiatur reſiſtentiam niſi quæ oritur ab inertia
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                  materiæ. Si vero aliam inſuper reſiſtentiam patiatur, deſcen­
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                  ſus erit tardior, & ex retardatione innoteſcet quantitas hujus re­
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                  ſiſtentiæ.
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                  <s>Ut corporis in Fluido cadentis velocitas & deſcenſus facilius in­
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                  noteſcant, compoſui Tabulam ſequentem, cujus columna prima
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                  denotat tempora deſcenſus, ſecunda exhibet velocitates cadendo
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                  acquiſitas exiſtente velocitate maxima 100000000, tertia exhibet
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                  ſpatia temporibus illis cadendo deſcripta, exiſtente 2 F ſpatio quod
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                  corpus tempore G cum velocitate maxima deſcribit, & quarta ex­
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                  hibet ſpatia iiſdem temporibus cum velocitate maxima deſcripta.
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                  Numeri in quarta columna ſunt (2P/G), & ſubducendo numerum
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                  1,3862944-4,6051702 L, inveniuntur numeri in tertia columna, &
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                  multiplicandi ſunt hi numeri per ſpatium F ut habeantur ſpatia
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                  cadendo deſcripta. </s>
                  <s>Quinta his inſuper adjecta eſt columna, quæ
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                  continet ſpatia deſcripta iiſdem temporibus a corpore, vi ponderis
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                  ſui comparativi B, in vacuo cadente. </s>
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