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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)
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B.
De Calculo Centri Cravitatis. Cap. V
In Semi-parabolocide Cubieo; distat a Fangente Verricis, 3 alcituci-
nis; a Diametro B Laticudinis; vel Z Semi latitudinis.
In Semi parabolocide Biquadratico; distat à Tangente Verticis, ; AI-
titudinis; a Diametro, 3 Latitudinis; rel, 3 Semi-latitudinis.
In Semi- parabolocide Supertolidali; distat a Tangente Verticis, E AI
titudinis; a Diametro, I Latitudinis; vel,? Semilaticudinis. Pt Ai
militer in Semiparabolocidibus sequentibus, mutatis mutandis.
In Semiparabola Complemento; Diltat a recta per Complementi rer-
ticem (qua est parabolae Diameter,) 3 Alcicudinis; d Diametro
Complementi, (quae est Parabola Pansens in verrice,) id Laciru
dinis; vel3 Semi-laticudinis.
In Complemento Semiparabolocidis Cubicalis; Distat a rertice Paral-
lelorammi circum seripei (ret Parabolocidis Diametro) 5 Altitudi-
nis; à Diametro (rel Parabolocidis Langente in rertice,) i Latitu-
dinis; vel 3 Semi-laticudinis.
In Complemento semiparabolocidis Biquacraticalis; distat à verticis
rectam (basi parallela) E Alcicudinis; a Diametro ejusus id Lacicudi-
nis, vel Z Semi-laticudinis.
In Complemento semiparaboloeidis supersolidalis; distat à verticis
recta; Alcicudinis; a Diametro,  Lacicudinis; rel i Semilatitudi-
nis. Tit in sequentibus similiter, mutatis mutandis.
Fisura Reciproca dimidiatae, secundum seriem cujus Index non est
major, (hoc est, non minus negatirus,) quam -- 5, constitutae; Cen-
erum Cravitatis non habent. Sin major sic index quam Z; (e.
quuntur serierum directarum leges. Nempe.
Si Index SE --- 3; Contrum graritatis distat a vertice ABuTX, 3 AItitu-
dinis; ab ejus Diametro, Z Latitudinis (seu Ba(eos) Inscripei Pa-
ralleloorammi; vel Z Semi-latitudinis.
Si Index sit -- 1; distat a Vertice, 3 Altitudinis; d Diametro, E L. ati-
tudinis; rel 3 Semi-laticudinis.
Si Index sic - 3: distat a Vertice, 3 Altitudinis; a Diametro 8 L acitu-
dinis; vel Z Semi-latitudinis. Et sic deinceps.
Si Index siC = Z; distat a Vertice, 8 Alticudinis; a Diametro, Z Lati-
cudinis; vel ? Semi-lacicudinis.
Si Index sit =-3; distat à Vertice, i Altitudinis; à DiamCtTO, S Faci-
cudinis; vel 3 Semi-latitudinis.
Si Index sic --- 3; distat a Vertice, E Altitudinis; a DiamCErO, Z L ati-
cudinis; rel ESemilaticudinis. Et in reliquis similiter, mutatis mu-
tandis, Ret ex calculo judicium.
In Figuris Solidis, idem plane obtinet atque in Planis, secundum cal-
dem series conttructis; nisi quod, Pro Semi. L atitudine in planIS, PO-
nenda erit in Solidis (in illo plano quod per diametrum axemre, et
Centrum graritatis Basis, incedit,) Distantia Centri gravitatis BaliS,
a Diametro vel AXC; vel, pro Laticudine in illis, Dupla illa Distan-
ria in lis. Atque, pro Duplo Indicis, Indicis Sesqui alterum.
Puta; Si seriei Index Sit, 2, 37 2 5, etC. 2, 37 475, dc.
43
3, etC.
eC. quiq in Planis (ut dictum cAt) extribet 8, 163 12
_C. 103 143 187 223 _C. 23 436, eC. 3, 2, 3, eC. Latitudinis; Yel 2,338, 2
eC. 3, 33 33727 etC. 2, 2, 33 _C. 2, 4, 2, _c. Semilatitudinis: Substituen-
dum erit, in Liguris Solidis, 3, 3, 17, 13, _C. 8, 173 22, 17, _C. 3, 3, 3, eC.
2,8, 18, _C. Distantiae Ceneri praritatis BaliS, d Diametro vel AXC.
Llabet aurem Centrum Craritatis Figura Solican si seriei Index Paltem
atast tibus ECtaol an 3
Fie
132.
33
34
e