§■ 35- Quoniam iflam fummam in logarithmum 

 hypcibolicum ipfius cot. l a, duci oportet , quaeramus pri- 

 mo logarithmum vulgarem ipfius cot. 15' qui reperitur 

 — 2,3601799, qui in logarithmum hyperbolicum conuer- 

 titur , fi multipHcetur per 2,30258509 ficque totum pri- 

 mum membrum nortrae expredionis conftabit his partibus 

 1,00001904.. 2,3601 799- 2,30258509 quae per logarith- 

 mos hunc in modum euoluuntur : 



/ I, 00001904 — o, 0000082 

 /2,30258509 = 0,3622157 

 /2,3601799 =0,3729452 



/membr. I. = o, 7351691 

 crgo membrum I. = 5,43461. 



§. 36. Porro pro fecundo membro logarithmus 

 hyperbolicus binarii ducatur in cof. a hoc modo 



/0,6931472=9,8408253 

 /cof. a= 9, 9999835 



/ membri II. = 9, 8408088 

 ergd membrum II. = 0, 69 3 1 2. 



Hoc membrum fecundnm fi ducatur in ?fin. a* dabit mem- 

 brum tertium , quod ergo ita reperietur 



/ mcmbr. II. = 9, 840 80 8 8 

 /1 = 9,8750613 



/fm. a' = 5. 8816838 



/membri III. = 5, 5975539 

 crgo membrum III. = o, 00004. 



HiS 



