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# Title: [Johannis Wallis S. T. D. Geometriae Professoris Saviliani, in Celeberrima Academia Oxoniensi; Opera Mathematica] Johannis Wallis S. T. D. Geometriæ Professoris Saviliani, in Celeberrima Academia Oxoniensi; Opera Mathematica (shelfmarks Leibn. Marg. 100:1/2, Stück 1; Leibn. Marg. 100:1/2)
# Folio 980, page id 851387705:1000
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De Ane in Peritrochio,
nedum eo Tuperior.) Sic nique directius eo loci Vis appiiabitur, ubi plus opus est.
Virium; neque Aerahendum cancummodo, Sel ACH Dondus erit, sen L-
lerandum. Atque hoc eo maris Faciendum est, ubi per lergua  Talebras, rialque
37. Atque ad hunc etiam locum spectare porerit, uE redoaL LaLtO, CUIL GUa CICCMIM
plano incumbune Craria, E Rocinda sint, delcendenco Volrr Lolcane; Labi vero,
Cap. VII.
inaegualiter asperas, quam ubi per Planiciem crahendum est Plaustrum.
E planis terminencur: acque illa tacilius quam haec moreri.
38. Intelligatur enim O grare, dechri plano incumbens superticie sua plana AB:
luque a lui Centro Graritatis perpendicularis ad declive planum IR, ad C en-
arum Terrae P, dectiri plano occurrens supra B. Maniteltum est (ex Sche.
matis inspectu) non posse deorsum Volri O orare; nis, facto B CentrO mo-
cus, radio BO describatur peripheria, eujus lupremum punctum erie S in recta
BS ipsi PO parallela seu ad Florizoncem recta; et Centrum graritatis  Per 15
arcum concinuo ascendere; per prOD. 20. Cap. 2. FL (ascendente Centro Gravi-
cacis) ascendere ipsum grare, per prOP. 16. Cap. 4. Non isitur ob Graritatem
Volreeur cirea B punctum permanens. Labi vero potest, (lato  Centro in
recta ipsi AB parallela,) quoniam sic labendo descendet O. Ft quidem actu la-
becur, si tanta sic in ea declivitate Craritatis Vis ue superare potlic impedimen-
rum (de quo turra aliquories dictum) ex coharencia, indeque orca FrI
etione.
39. Si vero, ut in GravI P, recta d sui Centro Craricaris ad cerrxe centrum P P,
decliri plano occurrat intra B: Volvendo descendet (et quidem porius quam La-
vendo, ob vitatam trictionem.) Ouoniam peripherix Centro B, radio B P, de
scribenda, supremum punctum Serit in BS recta, ipsi P F paralleta; arcusque
SI descendens: (per prop. 20. Cap. 2.) adeoque praecipicabitur Grare P. Sal-
rem nisi decliritas plani A B, seu rectae huic parallelx a L. labente describendae,
canta Sic, ur pravitacis Vis in illa dectiritare eo excettu superet impedimenium a
Frictione orcum, uc excessus hic praepolleat Vi Graritaris in ea dectiritate quau
habet areus SD in puncto T; hoc CAt, (per PrOB. L5. Cap. 2.) quam habet Recta
arcum in L puncto contingens.
40. Si B e P coincidune; perinde est ad uerumris casum reteras. VolVetIT
autem, non Labetur; ob Frictionem Impedientem.
4F. Sin grare, ut V, Spharicum siE; (seu quod hujusinctar est;) propier idem
punctum AB, recta V P (ad horizonem recta) dectiri plano intra B semper oc
currec; led et Dectiritas Ceneri V Volrencis (proprer B V declivi plavo rectam)
eadem