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# Title: [Philosophiae Naturalis Principia Mathematica] Philosophiæ Naturalis Principia Mathematica (shelfmark Leibn. Marg. 166)
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PHILOSOPMTLEE NATDRALIS
IDE MOTV
LORPORVH
ad da 
a
De Motu Fluidorum 5 Resistentia Projectilium.
PROPOSITIOZZXII. TTTEOREMA XXVI
Si Corporum Systemata duo similia ex aequali particularum numero
constent, e particule correspondentes similes sint es propor-
tionales, singulae in uno Systemate sineulis in altero,  similiter
sitae inter se, ac datam habeant rationem densitatis ad invicem,
es inter se temporibus proportionalibus similiter moveri inci.
piant, (ea inter se quae in uno sunt Systemate e ea inter se quae
sunt in altero) e. si non tansant se mutuo quae in eodem sunt
Systemate, nisi in momentis reflexionum, neque attrabant vel fu-
sent se mutuo, nisi viribus acceleratricibus quae sint ut particu-
larum correspondentium diametri inverse es quadrata velocita.
cum directe: dico quod Systematum partieulae illae persent inter
se remporibus proportionalibus similiter moveri.
Corpora similia de similiter sica remporibus provorrionalibus in-
ter se limiliter moveri dico, quorum litus ad inricem in fine tem-
porum illorum semper lune limiles: Puta (i particulae unius Syste-
matis cum alterius particulis correspondentibus conterantur. Vn
de cempora erunt proportionalia, in quibus similes ec proportiona.
les Figurarum similium partes a particulis correspondentibus de
scribuntur. Isieur si duo sinc ejulmodi Srctemata, particula cor-
respondentes, ob similicudinem incaptorum motuum, pergent -
militer moveri ulque donec sibi mutuo occurrant. Nam s nullIs
agitancur viribus, progredientur uniformiter in lineis redtis per mo-
TuS LC8. T. Si viribus aliquibus se mutuo agitant, ee rires illae sInE
uc particularum correspondencium diametri inverse de quadrata re-
locitatum directe; quoniam particularum situs lune similes dt vires
proportionales, vires cotxe quibus particula correspondentes agi-
tantur ex viribus lingulis agitantibus (per Legum Corollarium
secun-