166 



Astrofwmkal and Nantkal Colkctiom^. 



Dist. 

 Semid. 

 Sum 

 Diff. 



14' 5^'' 

 15 18 

 30 13 

 23 



P. L, for 



P. L. semiduration 



Immersion 



10 



P. L. 

 P. L. 



Half sum 

 H. M. 

 7M 33s 



3 29 



.7750 

 2.6717 

 3!4467 

 1l7233 



3504 

 1.3729 



9 55 51; 10" ll'«7« Emersion. 



The Connaissance des Terns makes the distance 14'^, and 

 the whole duration lO'*^ only, 



ii. Errors q/* fAe Lunar Tables; deduced from 406S Obser- 

 vationSf computed by order of the Bo arb of Longitude. 



* Greatest mean of three consecutive errors. 



