f. ir. Ad bnfin coni acciiralin.<; indaiiandam. lii- 



o 



biiatur abfcilTac u- certiis quidam valor r. unde j)ro rcclione 

 coni ad axcm OG normali in (juavis diilantia O G n: c a 

 verlice, obtinctur acqualio (§. ic.) 



quae ellipfm dcfmit , cuius cenlrum G, axcs E F ~ 2 n , 

 11 I — 2 />, ct acqualio gcncralis: z^ ~ b- — j! i'"- Ilabc- 

 mus itaquc b^-t~c-, ^.^ — ^i-', confcqucntur a^ — iszJ^c', 



,, (fc — hc i jt — ?)c gj. Jj __ / a ey{ki —IJ) ^ r. e e fn^ . 



>'l»:'2— 73") 2nj;aa * ' 2l " ' ns — I ' 



luidc ob k^l, fcquilur, b cfTe axcm transvcrfum, a mino- 

 rcm feu coniugalum. Cum [' ~ !~-' fit ratio conftans a 



didanlia c indcpcndeiis, fcquitur, omncs corporis (juacTili 

 feflioncs ad axem normalcs cifc ellipfcs fimilcs, idcotjue /o- 

 liditm cjje conum cllipikumy neque unquam bafin in circu- 

 lcrm abirc pofTc : timc cnim forct ^~i, idcocjuc k~l, 

 h. c. n^ -h- 1 — 2 )v cof 2 a ~ u"* -+- i — 2 }r (§. 10.). fcu 

 aro^cock.m quoquc ca(u forct circuli radius b -c/ ^.^ipi r: o, 

 inlcgrum fcilicet folidiun in punflum abirct. Qnaproptcr, 

 ctnn phini cum fphacra inlfMfcflio fcmj)cr fil circulus , fc- 

 quitur. (J^i^. 5.) planum KCF nulJo modo ita collocaii 

 pofTc.. iit fi ad (ius cum fpliacra inlcrfcdionom KCF c bi- 

 nis ftipeificici Iphaerae jMinflis A, 13, ducantiir ciiculi ma- 

 ximi AC, IjC, comm fiiins fmt in rationc conftanlc. 



5. i-j. lam i^itur ad compl' l.im jiioblcmalis folu- 

 Tij,. 6 tioncm j^ieivenimus. Uato fcilicct angulo plaiio A013 ~ c, 



in codcmquc plano captis aiij^ulis j 



AOE ^ 



