234 



E N D I X. 



" E X A M P L E. 



" Augufi: the thirty-firft, the ohferved diftance of the 

 " Moon's center from Jupiter, cleared of refrafliion and 

 *' parallax, was 32° 35' 52", the Moon's latitude being 

 *' 1° 47' N, and that of Jupiter 1° 36' S. 



"Latitude J i° 47' $'11168,4930 Difference of Latitude, 3' 23' Vers. Sin. 7,3413 

 " Lat. % - I y-i Sine 8,4459 

 " Halt diltance 16 18 Tang. 9,4660 Diilance 32 36 Cotang. 10,1941 



"Arc A. Cj' e^z" - - Sine 2^6,4049 Arc B. 9' 25" 



" The fum of theie Arcs — 10' 17" Sub:iaifted from 

 " the diflance - 32° 35 5a 



Sir.e 1-7,4354 



"■leave? 32 25 35 the diffcren.ce c>f Lpngitude between the Mpon and Jupiter. 



*' Knowing the longitude of Jupiter from the Ephe- 

 *' meris, and the difference between it ^nA that of the 

 " Moon, we mav infer the longitude of the Moon by 

 " obfervation : and from the lono:itude3 fet down for 

 " noon and midnight of each day in the Nautical 

 ** Almanac, find the apparent time at Greenwich when 

 *' the Moon had that longitude, which compared with 

 ** the apparent time at the Ship, will give the difference 

 *' of meridians. 



A Table 



