so Colonel Lambton's corrections applied 
0 , „ Fathoms. 
The degree for latitude 47 so 4 6 = 6 0779,00 French. 
for latitude 52 2 20 = 60824,26 English, 
for latitude 66 20 12 = 60955,00 Swedish. 
Then computing from Eq. 3, page 498, in the Philosophical 
Transactions for 1818, 2d. Part, we shall have the ellipticity 
of the earth as follows : 
By the Indian and French 
By the Indian and English 
By the Indian and Swedish 
1 
1 
1 
Mean 
1 
310,07 ’ 
309,64 ’ 
313,73 ’ 
3 ll > l S 
I 
1 
1 
1 
3 10 >3 ’ 
309,94 » 
3 i 3 , 7 2 * 
3 ”, 32 
1 
1 
1 
1 
307,88 ’ 
3 ° 7>55 
309,92 ’ 
3 ° 8 , 4 S 
General 
Mean 
1 
31°, 3 1 
arc between 
Putcha- 
Fathoms. 
- 
- 
- 
85764,38 
polliam and Punnae, is 
To which add half a degree south, or 
Their sum is the terrestrial arc between Putcha- 
polliam and half a degree south of the middle 
point ------- 
The latitude of half a degree south of the middle 
point, is 9°4 / 44 // , or more correctly 9°4' 43 // ,66, 
which is the latitude of the south extremity of 
an arc of complete degrees. 
Now the terrestrial arc between Putchapolliam 
and Namthabad, is - - - - 
And between Namthabad and Daumergidda - 
The sum of these three arcs is the terrestrial arc 
between latitude 9 0 4 , 44" and Daumergidda 
The latitude of Daumergidda is i8°3' 23'', 58 
From which subtract - - - 9 4 43 ,66 
30238,54 
1 16002,92 
248199,62 
178901,48 
543104,02 
