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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 109, page id 85138403X:0125
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EF BnarVOuOC.
L, dd V: F 2 F 4 p2: aUE Z L ad V: = L2 + p. A deoque uE Om-
nes V: ZL2 + p: ad cocidem = L; sic omnes OE ranentes, HOS
CH, (in Pa. Tibus exiovis) 00 curre, hoc elt A O curra, ad Om-
nes CC, hoc estrectum A T vel D O. HOc est (i A9. 28. p0.
NAEUT A B = Z E semilicus cum rectum cum cranversum su-
Pecbolae R n; _ A T vc in pacabOl: FTIE, AE Y A RH rectan-
oulum, ad Y A I x quadrilineum: SIC A Y cAnZeHS, vel Ba(IS
DO, ad AO curram pirabola. Feparres parcibus respective
proporcionales. Quod guidem lupra inveneis convenie, ubi asem
A D ac A O curram esse octendimus, UE T A n criangulem, ad
idem T AR _ quadrilineum. NAM BE TFIABGOILI Y A X =
=d C, ad rectingulu Y A IE = Z P V d L; hoc eHt, uc d ad vdL:
HC A D ad A I.
Sed ec hinc simili modo acque supra, inreniemus superficiem C’onoidis
conrexim conoidis parabolici. Nempe (ob easdem parricularum Parabolici
EF _ n n distinciaS ab A K,) FNIE uE C Ylindeus ex convertione superficies.
PIE parallelosrammi, ad Cylindrum ex l. mili conversione paral-
leloorammi Ts minus conoide hyperbolico ex convertione R SM
hyperbola, (circa eandem A s reCTaM;) sic circulus radio A Y
delcripeus ad conoidis superticiem conrertione AO curvae de-
Scripeam. Duod e supra erasiris etiam conrenit. Nam eadem
est racio circuli radio A T descripri, ad duas cerrias suxerficiei
cylindricae recca TO descripEx, quae est Colidi ex Convertione
Y AI rectanguli, ad Tolidum ex convertione crineuli Y A N,
circa eondem AK. Ouare e eadem superticies Conoidis verovis
modo proveniet.
Sed incelligimus jum (non AY, Scd) A D inpunctis d aqua- CurVa Pa-
licer dirilam: adeooue d A = d arirhimetice proporrionales, _ rabola.
dd = A aequales, e d0= V d L, _ (propier dF drplam Fig. 36.
rectae d A) cangeneS OF = N: 4 d F d L. Tcem (continuatis do
AOnCCBFONIMIX CUXQUC LaNGeHEI OF OCCUrFAE in I) uc dF= 2d,
ad FO: sC d d= A, 2d 01 = 2V: 4a + dL. A.: d + =dL
2
Adeoque (Iad CUIndeI AD aXCM CONITTUAELE TUM A D A ErI-
angulum isosceles rectangulum, cum ADHI hrperbole (cujustum
lacus rectum cum eranlversu (Ir = ,) acque AD E rectaneu-
lum cujuscunque lacicudinis, (adeoque singulas C d singulis 
VC
18. 28.