*>^.l ) 301 ( 



dibit ^.-7-i =: J -f- C- Ciim igitur ratio inter 



niotum medium Lunae ac folis vt cognita fpedari poffit, 

 ftatuamus JJ — X, fietque 5 — J -j- (^ , vndc 



concludimus a — — 1~,^: — hincque -7-7-1— TTT," 



§. 21. Hos igitur valores in noftras aequationeS 

 principalcs introducamus ac leperiemus 



U±C)ddX __U-^-C)^ Q(y-X) _Gy 

 IT [i±.CVjY _(^ + C)Y O(p-Y) Oj 

 . ,„ (i + O^^^Z^ ^C22_G2 

 Cum igitur fumferimus 



hinc reperiemus has litteras L, M, N fequentl modo 



_ XXX XXQ(y-X )^ XXO y 



'"• ^- ^'"^ (i + C)^' " (6 + cy 



XXY XXO (t)-Y ) XXQo_ 



*'• ^-~ V' '^ (i+C)^' (6+CK 

 _ x>z ?^^o^ 



II» 



