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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 847, page id 851387705:0867
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15 X. + 37. Re +36 Lo uber exacum Omn. 
dem duptum, nempe
aC2
=33 R3 4757 R 19 X et deslexatum Omnium
P rectam A BFs. 282, curramque A b Fg. 177. spectanium.
Insuper Omnes s (sumpris c arictimetice proporcionalibus,) sunc idem acque
omnes bo Hi5. 282. seu dupium Omnium 5 = 70 tis. 183. (ut S Cc. Octentum est.)
Sea Omn. 5 (= Omn. 20) sunc Omn. V: 4 R2
=c
seu Omn. 27. Adeo.
que Omm. 55, (seu iptius AaV, vel A7V, momentum respectu AG, vel COF
respondens Ongula) sunc, Omn. C V: 4 R2 - c
2R
:(Idem acque Ungula A990
vel A Q97, aciem habentis AO, momentum respectu AO, per 2 R diritum:)
EF Omn. SC; (hoc est, momencum Ongula Aav, vel A70, AB. 183. aciem tia-
benis AO, respectu ejuldem AO,) fnE Omn.
E. Ec provaltu Mt
et tdit ste
 4
oticab
4a
Teu Omn:
d03 Letu
DeCalculo Centri Cravitatis.
34
PTOP. XXII.
eo spectancium. Ft C Prop. FiE. 177
cex AF A8. 282. figura alcicudinem, duplam alcicudinis A a A8. 183.) eju (. 183.
4
seu Omn.
Sunt autem mgnes V: 4 R = c: leu Omnes X: (sumpris e arichimetice prO. FIB. 283,
porcionalibus,) ligullatu agitates rectis rg, complentibus quacrantem A aO 184
fig. 183. (per SG.) Ouibus aequales incellisantur rectae r9 quadrantem Aa C
fis. 284. limilicer complentes. Cui adjacere incelligatur semiparabolocidis Cubi-
calis complementum, APa, quadrato AaPD inscriptum; verricem habens A.
Cujus icaque Parabolocideos Latus rectum erit 4 R (quod utique in diametttim
AD = 2R, ductum, clliciat 8 R. Cubum ordinatim in Paraboloeide applicara
OP = 2 R;) per quod itaque 4 R, S diridatur recta DP = A∞ = 2 R, cubus
8 R3; habebicur Diametex in Parabolocide, rel Ordinacim in Complemenro axpli.
catas AD = aP-
R3
= 2. P: Ee similices, Si per idem + R3, diridatur, recta
ed = A3 = c, Cubus e; habebicur diameter in Pacabolocidle, vel ordinacim ap.
plieaca, in complemenio, Ad = rP = P e lic ubique (Sune urique Ordi-
nacim. applicatae in semiparabolocidis hujus complemento, in diametrorum inter.
ceptarum complemenii ratione criplicata, teu uc carum Cubi.)
Cum itaque qux quacrantem AaO A8. 184. complent rectae r 4 Cnt ipla
X = V: 4 R2 - 62: quaeque semipasabolocideos Cubicalis complemencum A a P,
complene recta rP, sinc ipsae ; quae ex his fiune rectaveuta sune ipsa
CV: 4 R - c2:
+ se3
4 L