55a OBSERVATIO 



log. [a-{-r-g) n:4-, ii24d25 



X vel OQ^ii=2i5,<5 

 MO+MQ^ —236,0 

 MO-M(i z=z 41,0 

 log. 236,0 —2,3729120 

 log. 41,0 r:i, 6127839 



3,9856959 

 log. 215,^11=2,3336488 



log. (ON-NQ) =1,6520471 



ON-^4== 44,9 

 ^(ON-NQ_) =: 22,4 



iOQ =107, s 



ON =2130,2 

 MO'(i38, 5') =1:19182, 25 

 ON' m6952,o4 



MN* =32230,21 

 MN — 47, a. 



Definita centromm diflantia minima MN, cum 

 pun(^o N, traiedoriae lanaris OQ^, refpondeat obfcu- 



ratio 



