Dr. longfield’s 
180 
Hence the times of the Nautical Almanac corrected 
and reduced to the effect of a 3^ feet telefcope, and com- 
pared with the obfervations made at Corke, to find the 
difference of meridians of Greenwich and Corke, are as 
follows : 
^Jbferved 
at 
Gorke. 
Corr. of 
Nautical 
Almanac. 
Nautical 
Almanac 
corre&ed. 
Diff.of 
meri- 
dians. 
Mean. 
h # // 
/ // 
h f n 
r n 
1772, July 
Im. 
12 41 23 
— 0 11 
*3 J 5 37 
34 14 
1 
1 per immerfions 
* 773 > Aug.22 
Im. 
12 52 29 
— 0 16 
13 26 36 
34 7 
f 34' io"|. 
1772, Sept. 20 
Em. 
8 21 16 
— 0 12 
0 
*-o 
00 
33 44 
1 
1773, N° v . 24 
Em 
10 40 16 
-0 8 
11 14 6 
33 5 o 
1 
| 
1 
1 
1774, Nov. 29 
Em. 
8 34 19 
+ 0 9 
9 8 15 
33 5 6 
1 
^ per emerfions 
! 775 > J an - >4 
Em. 
8 43 23 
+0 9 
9 1 7 3 
33 4 ° 
33 ' 44 ". 
Mar. 1 
Em. 
9 13 l(y 
+ 0 42 
9 46 45 
33 2 9 
Mean of two refults, 
33 ' 57 "- 
Hence the difference of meridians of Greenwich and 
Corke is 33' 57" of time, and the longitude of Corke is 
8° 2 9 r 1 5" Weft of Greenwich. The latitude of Corke, 
as determined by Dr. longfield, by a mean from two 
quadrants is 51 0 33'' 54" North. 
By Mr. newenham’s obfervations compared in like 
manner the difference of meridians of Greenwich and 
his obfervatory is 34 ' 1 r", which, according to Dr. long- 
field’s obfervations, allowing 8" for the difference of 
meridians, 
