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# Title: [Johannis Wallisii SS. Th. D. Geometriae Professoris Saviliani Oxoniae, Tractatus Duo] Johannis Wallisii SS. Th. D. Geometriæ Professoris Saviliani Oxoniæ, Tractatus Duo (shelfmark Leibn. Marg. 103)
# Folio 74, page id 85138403X:0090
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DE CFCDDIDE.
ptatione Creloidum ad eundem modum
innumera alla oed Peslei pelle de segmencis, Trianoulis
mixeilineis, _ Lynulis, live componantur ex porcionibus circu
latibus, sire ellipricis. Quod indicasse Cufticiat.
Veruncamen, cum C vclois (E Linea Mechanicanon Ceome-
crica; non vere solruntur problemaca, sed Mechanice perticiun-
eur, non enim magnicudine datur Linea C3 P; unde interlectio P
non dacur Creometrice. Farendum est enim nullas Incerfectiones
Geomerrice dari praecerquam Rectarum, et Incersectionem
Rectae ex Currae (ut quando Recta secar Circulum aux sectionem
Conicam) non dari quacenus calis est, sed quacenus est communis
incersectio binarum Rectarum inipTa C UrVA, IEa UE (ex NITUEE
Currae) uniformem quandam ad invicem habeant ubique Rela-
tionem, quae aequatione aliquapollic exprimi. In Cpcloide, vero
Relacio inter PC, _ P F, lire iricer Arcum majoris circulisinum-
que minoris simul sumpros, ec sinum Vertum, perpecuo varia est
_ difformis. Polito autem punctum P dari, non deest concempl2-
eioni vericas ex pulchricudo Geometrica.
Onicquid perficitur hoc modo per rectam secancem Cvcloi-
dem habecur eriam s circulus secer Evoluca curvam. Frolutam
durem appellamus superficiem Inoulxe Cplindriacae. Sunt alix
etiam Curvae quae cantundum praeltane, quarum eriam incerfectio-
DeS (ZCOMCCTICC nOn dAnEUF.
Non inurilis est contemplario C veloidum quae gEnCFANEUT ex
circulo super Balum circularem seroluro, hujus generiS VOCeNTUE
Exicpeloides, talesenim curvas Planetae in Epicrclis recti de-
Ecribune. Duasdam habent proxriecates Creloidum proprietari-
bus non ablimiles, qualdam divertas ec magis perplexas, praeci-
pue Epicyeloides Planecariae, in quibus morus non Punt aequales.
Verum lixe omnia prosequi non es praesentis Iusticuci
FhInC PaTCE ex COntC