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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 47, page id 85138403X:0063
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C
ductarum; Eirein D.
22. Omnes autem Z V in D; hoc est, critineum CZ AF in
D; hoc est (PeF  10) DP L 2D2 in D; eA, D = P = 2D
Unde (I auFeramus Omnes Z. V in
∞o hoc eA : D= P = 5De (VF
deinceps ostendetur = 25 d seg.) maresic Z B= P - =+D3 quod
itaque est Tolidum ex Trilineo CL A F Ag. 20. in alcieudines
respectiras 2. Z f9. 9. dusto,
23. Fluic igirur Tolido, si addatur Colicum ex Bilineo C A v
in easdem respectiras alcieudines due O, nempe ZD (per u
20;) aEBFCGAEU Z DZ P = 25+ D3 + 312 = Z D2 P- 35 D3, eR
Tolidum ex Trilineo Cv A F fig. 20. in alcicudines Z Z f∞. 9.
respectire ducto; sire ex omnibus Vvf8. 20. in respectiras J. X
fg. 9. Eive ex omnibus Z Y in Q. X fg. 8. respectire.
24. Juam aurem rationem habet hoc Tolidum (ex omnibue
ZZfg. 9. in V vA9. 20. respectire,) ad Colidum ex semiparabola
F A C (hoc est, omnibus, 2. Z) Ag. 9 in A F f∞. 8. ubique
ducta, hoc eH, ad Z D = P: (HAM DTOPTCF A C  2D, eC CF = 1,
adeoque restangulum AC L= 2D E, erit ea semiparabola
=D2 quippe Z restanguli; quae semiparabola, ducta in F A = 5P,
dac Z D= P aonicudinem solidi, sire prismatis parabolici:) Fam
habet momentum superficiei, in suo licu, quae tic ea Pemiconver-
sione curVa C Z. A f9. 8. circa A F, respectu rectae CF, (hOc
est, factum en semiperipheriis, ipsis Z X proporeionalibus, in
distancias Vv, hoc est Z X, respectire,) ad momentum ejusdem
suxerticiei ex puncto A suspenta, (hoc est, ad Factum ex iildem
Temiperipheriis in distanciam A F ubique.) Ec conseguenter, ea-
dem est ratio distanix ceneri graviratis ejusdem superticiei à
recta F C, ad distanciam F A. Hem pC UC P - 25 D ad P.
25. Quod aurem omnes Z. V in B, SIC Z DZ P = 5 D, sIC
Dederentim octendetur. Omnes Z V A9. 20. in 4 a, hoc eA
(DTOPTeE C A  2 D) in respestira quadeaca distanciarum C Z)
ad easdem omnes in quadratum C. A; SUHE uE iomentum (re-
spectu rectae CC) Porcionis prismaris in suo lieu, oblique plano
secti, Cuper crilineo C P A F crestae, alcicudinem habencis in
puncto C nullam, ac super A L. recta xqualem LCA_ C A; 20
MOMeH.
Fi8. 10.