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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 16, page id 85138403X:0032
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erun
lt.
erCLOID
D F.
varicer datum erie ex hujus centrum gravicaris; e consequentee
(propcer dacum eriam cenerum gravitatis semisolidi ex conversi-
one Traperii EZ. Y F,) cencrum gravitatis semisolidi (adeoque de
Tolidiinceori) ex convertione segmenti CZ X circa C F. Da
buneur ieaque quae guxrebintur onnla.
55. Pollumus aurem haec eadem exhibere, etiam fine ope cen-
trorum K, HI, EC; mechodomihi quidem Facili e Familiari, ex
principiis in nostra Infinicorum Arichmerica craditis de sumPEa,
Ce quidem in multis expedicius:) sed quam alii Fortan haud ita
prompre Cine longiori verborum apparatu aeQVCreNEUT.
Acque hactenus ea sune quae ad D. Carcavium mentibus
Augulto e Seprembri, Anni 1658, miseram (hoc eAt,
IMEra cempuS a proponente limitatum,) mechodum me-
am, coriusque rei quasi sceleton, exhibencia: PF ouidem
risdem fere cum rerbis cum ordine; Nisi quod ad 5
30 numeros emendarerim qui viriolL erANE, UEDOrC quOS
inveltigando Trilineum C A F A9. 7. Circa recta AF
IHCaUCuS converceram cum circa C I convertendum
esset, e similiter ad 5 45; Juem calculi lapsum ubi
deprehenderam, liceris eodem Seprembri datis infinua-
bam; meque insuper cum ictius emendationem, cum alia
quae sibi suisre ad jultam demonstrationem deesse vila
Forene, ubi hoc indicaverine, extibicurum. Cum aurem
nihil inde hactenus monicus Fuerim, (quod oblatx con-
diciones expectandum innuune, ue e emendandi calcu-
li veniam iMpIne PerIECUNE;) Cacamen quae sequun-
cur, quasi Pcholiorum instur, ad praecedencium cum il-
lustracionem cum jultam demonstrarionem, libet hic
Tubjungere.
Set uum supra 5 45 deliderari videatur punctum C, quod
portionis cy. ibidem aelionaE (non centrum circuli, (ed) centru GTAVIEaTIS
lindri obli- Temiannuls ex semiconvertione circuli C F circa rectam AD:
qne secti, e5. IIlod hachechodo inveltigamus. Super circulo C Z F H9. 5. (qui
Cclo M2 F genitori Crcloidis aequetur) erigatur Cylindrus
sectus Fi C, aicudinem habens C c circuli genitoris perimerro
aegualem, acue aequalem Cemiperipheriae circuli radio FC
delcripei. LE. Icelligatur Cylindrus ille bilecari, cum per
arem Plano FcC paralleloscammo; cum per hujus diagonalem