Calcutta , Madras, and Bombay , m the East Indies. 423 
Longitude of the Madras Observatory from the whole of the 
foregoing Observations. By correcting the Tables : 
First and Second Satellites. 
h. m. s. 
Eclipses reduced to Madras, 5 21 6,35 
Observed at Madras, but not 
h. m. 
s. 
with the same telescope, 521 8,42 
Mean 5 21 
7 >77 
Observed at Madras to 1802, 
with the same description of 
telescope, - 
5 21 
7.72 
From 1802 to 1815, with tele- 
scopes of the same powers, 
5 21 
5)24 
Mean by correcting the tables, 
- 5 21 
6,78 
By correspondent observations 
at Greenwich, from 1787 to 
1816, - - 
5 21 
ii )97 
Mean, or longitude of the Ob- 
servatory, - - - - 
5 21 
9 ) 4 
East of Greenwich 80 17 21 
Fort St. George Church-steeple is 2' 21" east of the Obser- 
vatory; the longitude of the Steeple is therefore 8o° 19' 42" 
east. 
The longitude of the lunar observations before alluded to, 
about 800 in number, taken between the years 1787 and 1792* 
at different parts of Madras and at Coringa, and reduced to 
the Observatory, is 8o° 20' 16", 5 east ; and therefore, accord- 
ing to the eclipses, 2 ' 55" ,5 too great. 
* By the late Honourable W. Petrie, Esq. the late Mr. Topping, and myself: 
the Coringa observations by Mr. Topping. 
