44. ASTRONOMICAL AND 
~ At the beginning of the foregoing eclipfe at Greenwich, it 
appears, that the moon’s ecliptic longitude by obfervation was 
— 48 13? 3° 36", o, but when it began at Cambridge, her lon- 
gitude by obíervation was but 4% 12° 31* 6". The difference 
is 32/29", 4 = 1949'', 4. Let us find how leng the moon 
was in paffing over this portion of the ecliptic, thus, 
'The»'s horary mot. inlong. 2929',5—21769',5 3 2478506 
: 1 hour, 3600 3 5563025 E 
t. ue j 1949, 4 3 2899010 - i 
-— I 6 ^6! 
.3966 — 3 5983529. 
By this it appears, that it was 1» 6 ' 6'' after the eclipfe be- a : 
-gan at Cambridge, before the moon had the fame longitude, as 
"When the beginning was obferved at Greenwich : Therefore, 
10 11^ 99% 23% A. M. add 1" 6* 6'* ; the fum o* 45' 295, 
. fhews the time at Cambridge, when fhe had the fame longitude 
as at Greenwieh at 5” 29" 57“; and the difference 4^ 44' 28'* 
is the difference of meridians in time, between thofe two places 
as deduced from the ebfervations of the beginning of this 
eclipfe. By a fimilar procefs, we find the difference refulting E 
from the obfervations.of the end to be 4442117. I5 
mean is 4^ 44'294", 
Another folar eclipfe, the obfervations of which we make ufe 
of, to determine the difference of meridians between Greenwich — 
and Cambridge, is that of June 24, 1778. As the clouds | 
were troublefome, at that time, at Cambridge, and confequent- 
ly 
