CORPORVM RIGIDORVM. ^Cc, 



cof. B rt — cof. a cof. (3 C I - coC 0) - cof. y fni. 

 co(. B(.~ cof (3 coC V (i — cof Cj)) + cof. a fni.^p 

 co(. C/» rrcof. pcof y( I -cof (p) -co(. a fiii. (p 

 coC C a — cof. a cof. Y ( . - co (.Cp) \ cof. (3 fin. Cp 

 coC A £• ir cof. a cof. Y ( I - cof. (pj — co(. p (in. Cf), 



Qiiiim igitur fir 



conAc — cof. AZcof.Aff+cof.BZcorA^+coCCZcof.A^ 

 cof.B^ — cofAZcof.Ba-i-cofBZcofB^^+co^.CZcofBt,' 

 cof. C 2 zr cof. A Z cof.Cfl+ col.BZ col. B^+cof. CZ cof.C^-. 

 fi dicatur kZ — ^\ liZ^^/\^CZzzQ tumque 

 A z — ^'; B z — yi' :, C s — 6' , confequemur: 



cof.<^'z=:cof.<^c(5(.(p H I -cof.Cp)(cof (^cof a^+cof.^vicof.acof (3-i- cof. 0cof acof.Y) 

 -^ fin. (p (corS)co(. Y -col. OcoC P) 



cof.V^con>i:of.(I)+(i-cof(|))(cofv]coC(S'-+-cof.^cof.aconp+cof.kof (ScoCy) 

 + fin (pCcof.^cof. a — co(. <^col. y) 



cof.0'rrcoC9c.iC(p4-(i-coC(p)(co(.0cofY'+cof^cof.acofY+cof'vicofj3coCY) 

 + fin. (p(,co(. ^coC (3 - cof, -kicoC a), 



quae ctiam fic expnmi poffuiit : 



cof ^'-coC(^(cofa'+fin.a'coC(I))-f coC>](coCacof (3( I -coC(|)) -fcof Y ^in. 4^} 

 + coC $ :c()f a coC Y U — coC (p) - co(. ^ (in. (p ) 



cof. V— coC^^iCcof (3'-|-fin.(3'coi.(p)-i-co(.^(cofaool.(3;i— coC(p)— cofYfin.(p) 



+ c<)C0,co(.(3cof y(' -coC(p)-i-co(.a(in.(p) 

 cof d'— cof ^(co(.YVfi-.Y'cof (P -fcoC^(coCaco( y{ i-cof(p)-t-cof(3fin.(p) 



+ co(. yi co[. (3 :oC. y ( i — coC (p) — coC a fm. (p). 



2 2. Denique cum fupra *. 7. locum transhi- 

 tum pundi z ptr cuordinatas x', j' , z' ita defini- 

 ■vimus , 'vt fic 



L 1 3 a'=:/ 



