Trigonometrical Survey of India. 233 
the meridian from Punnae in 8° 9’ 85” near Cape Comorin to 
Damargidda in lat. 18° 3’ 16”, being about ten degrees of lati- 
tude, and extended a net of triangles over the south part of the 
peninsula of India, reaching on the east side of the principal 
meridian to the 19th parallel. Colonel Everest, who had been 
is chief assistant since 1817, and succeeded him at his death, 
completed the section commenced by Lambton, and extended 
the are to Seronj, lat. 24°, near which place he measured a base 
of verification. This is the most important base in the trigono- 
west is dependent upon it. Colonel Everest carried on the 
Dehra Din, lat. 30° 19’; the whole extent from Cape Comorin 
being 224° of latitude. He also extended a longitudinal series 
from the Seronj base to Calcutta, in the neighborhood of which 
em limits of which are united by a longitudinal series running 
along the foot of the great mountain chain, which thus com- 
Pletes the triangulation of that vast tract, comprising about 
m 
Everest,* he worked out the several series left unfinished be- 
0 L 
the Bombay meridian was connected with this series. He fur- 
ther extended another series in a northwest direction from the 
Stations of the meridional are, Banog and Amsot, through the 
Plains of the Panjab and a great portion of the mountainous 
ar. 
ai 
wt Attock, the i ae hraceay an area of about 67,000 
sa Thiles meridional series is far advanced from the 
at Karachi, along the Indus, to that near Attock. This 
“eration will complete a gigantic geodetical quadrilateral, of 
* Account of the Measurement of the Are of India, 2 vols, 4to, 1847. 
