v» "s^-v- 



,20 ^i^^ 



D" = D' + CC 4- C» . 5' -4- C . -4' + C+, et 

 5"= £' -h CD' + C« . C -+. C^ . B' 4- C* . ^' + CS 



prodibit adeo tandem 



Afz + f; ^ ^ ^ 2 i 4 



V ^ h &c. ; » 



Ideoque, si ponatur ;e = A (quo quidem ipso f ablbit inr)» 

 turn vero omnes negligamus terminos, qui, ne sumen o 

 quidem Sec. fl =,zo, partem minuti secundi efficiunt cente- 

 mam, fiet 



^ * 4 ' 



izz 



12S 





fe 



