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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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De Calculo Cri Ceravitatis. Cap. V
santia remotam, et quocunque si positam, hunt Solida; Pationem
inter se habebune, hac methodo inrestisabilem. Idemque in aliis
Fsuris mille modis eHicietur.
Elinc etiam seguitur: Si converlarum tum Moenitudines, tum Cencro-
rum pxaricatis Distancia, sint vel utraque aeguales, vel reciproce
proportionales; Figuras, simili convertione, factas, aequales ese:
Sinminus; Calcem in ratione ex illarum mlagnicudinum, et Dictan-
tiarum rationibus compolita. Det PrOP. 6, 7, C aP. T.
Item; Annulum quemris, xqualem este, elano converso, in Peripte.
riam Plani Centro graricatis descriptam, ducto. Duodtum de An-
nulo inceoro, cum deiplius parcibus, perince obcinet; prout Con-
vertio inceora Fuerit, vel partialis.
Eem; Circulum, aqualem ette, Facto ex Kactio ducto in lémistem Pe-
ripheria; (nempe, in Peripheriam, Radii Ceneropraritaris seu pon-
Ato medio descriptam; qua Peripherix Radio descripex semissis
eAt.) Duod cum in Circulo intesro, tum ipsius sectoribus perinde
verum est
Erem; Curram Chlinari recti Supersiciem, aequalem Facto ex Latere
(hoc eA, recta circumducta,) in Peripheriam iptius puncto medio
descriptam, (quae Balis Deripheris aequalis est.) Idenique de Con-
vertionibus Dimidiis, aur Parcialibus alis, perinde obciner acque de
Inceoris. FF sc in reliquis.
item; Cylindri recti solidum, Reguale, Paratetogrammo circumducto,
ducto in peripheriam tuo Centro graricatis descriptam; (quae est
Peripheria Balis dimidia, propter Parallelootammi Cencrum erari.
tatis in media sire longitudine sive lacicudine.)
Tem; Curram Coni recti Superficiem, aequalem L ateri (hoc CA rectx
circumductae) ducto in Peripheriam iphius puncto medio descrip-
tam; (quae eA dimidia peripheriae Balis.) Olod e Prunci supertr.
ciei (plano Basi parallelo abscisi) etiam accommocabitur.
Irem; Conum Rectum, aequalem Friangulo circumducto, ducto in
Peripheriam ipsius Centro gravitatis descriptam; (qua Pcripheria
Balis Friensest.) Ouod et Trunco (plano Basi paralselo abscisso)
accommodableur
et in reliquis similicer.
Ailn suia uic
Sio expolica fieura plana BC D (in B CD lineairi rectam projecta, ea proje.
Ctione qua in PrOp. Praeced. uH Sumus) quae circa rectam in Codem plano X
in unicum Z punctum projectam) exera
(Falcem non incra) lisuram expolicam
conversa, deleribar BD db tisuram Coli-
dam; (limiliter in planum projectam;
Adeoque batio Cenccum prariatis C deseri-
bat CC Deripheriam.
Vel etiam BC D recta vel csirva lineg
quaelibet in eodem plano, (Similiier in
BCD rectam projecta;) gux circa Z con
versa describai BDb. d supertieiem eodem
odo in Planum projectam: suoque Cen-
tro Crraritaris Cy deleribat Cic peripherium.
Ec super eandem basem erigatur Soli-
dum. Prilmaricum, vel Prilmarica Super-
ticies; cujus recta, Cenero graviraris C in-
alis ponatue ipli Cepeteerta. Pooque X abscindaue Frum
Cunque
AIIICHS Ci
Ctum BD56.