Newton, Isaac, Philosophia naturalis principia mathematica, 1713

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                  tione maximus decreſcentis inclinationis motus fit in Quadraturis
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                  Nodorum, & minimus inclinationis angulus in Octantibus poſt
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                  Quadraturas; dein maximus reclinationis motus in Syzygiis, &
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                  maximus angulus in Octantibus proximis. </s>
                  <s>Et eadem eſt ratio Glo­
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                  bi Annulo nudati, qui in regionibus æquatoris vel altior eſt paulo
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                  quam juxta polos, vel conſtat ex nateria paulo denſiore. </s>
                  <s>Sup­
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                  plet enim vicem Annuli iſte materiæ in æquatoris regionibus exceſ­
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                  ſus. </s>
                  <s>Et quanquam, aucta utcunque Globi hujus vi centripeta,
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                  tendere ſupponantur omnes ejus partes deorſum, ad modum gra­
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                  vitantium partium telluris, tamen Phænomena hujus & præceden­
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                  tis Corollarii vix inde mutabuntur. </s>
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                  DE MOTU
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                  CORPORUM</s>
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                  Corol.
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                  21. Eadem ratione qua materia Globi juxta æquatorem
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                  redundans efficit ut Nodi regrediantur, atque adeo per hujus in­
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                  crementum augetur iſte regreſſus, per diminutionem vero diminui­
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                  tur & per ablationem tollitur; ſi materia pluſquam redundans tol­
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                  latur, hoc eſt, ſi Globus juxta æquatorem vel depreſſior reddatur
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                  vel rarior quam juxta polos, orietur motus Nodorum in con­
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                  ſequentia. </s>
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                <p type="main">
                  <s>
                    <emph type="italics"/>
                  Corol.
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                  22. Et inde viciſſim, ex motu Nodorum innoteſcit conſti­
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                  tutio Globi. </s>
                  <s>Nimirum ſi Globus polos eoſdem conſtanter ſervat,
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                  & motus fit in antecedentia, materia juxta æquatorem redundat;
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                  ſi in conſequentia, deficit. </s>
                  <s>Pone Globum uniformem & perfecte
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                  circinatum in ſpatiis liberis primo quieſcere; dein impetu quocun­
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                  que obliQ.E.I. ſuperficiem ſuam facto propelli, & motum inde
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                  concipere partim circularem, partim in directum. </s>
                  <s>Quoniam Glo­
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                  bus iſte ad axes omnes per centrum ſuum tranſeuntes indifferenter
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                  ſe habet, neque propenſior eſt in unum axem, unumve axis ſitum,
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                  quam in alium quemvis; perſpicuum eſt quod is axem ſuum axiſ­
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                  Q.E.I.clinationem vi propria nunquam mutabit. </s>
                  <s>Impellatur jam
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                  Globus oblique, in eadem illa ſuperficiei parte qua prius, impulſu
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                  quocunque novo; & cum citior vel ferior impulſus effectum nil
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                  mutet, manifeſtum eſt quod hi duo impulſus ſucceſſive impreſſi
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                  eundem producent motum ac ſi ſimul impreſſi fuiſſent, hoc eſt,
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                  eundem ac ſi Globus vi ſimplici ex utroque (per Legum Corol. </s>
                  <s>2.)
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                  compoſita impulſus fuiſſet, atque adeo ſimplicem, circa axem in­
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                  clinatione datum. </s>
                  <s>Et par eſt ratio impulſus ſecundi facti in lo­
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                  cum alium quemvis in æquatore motus primi; ut & impulſus pri­
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                  mi facti in locum quemvis in æquatore motus, quem impulſus ſe­
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                  cundus abſque primo generaret; atque adeo impulſuum amborum
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                  factorum in loca quæcunque: Generabunt hi eundem motum cir-</s>
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