778 AECHDEACON PEATT ON THE DEELECTION OE THE PLir:MB-LI2^E IN INDIA. 
astmsk. Lune V. is omitted in station A because it can have but very little effect in 
the meridian at A. 
Station A. 
Lunes I. II. HI- 
IV. 
Station B. 
Lunes II. HI. 1^ ■ 
Station C. 
Lunes II. 111. 
No. of compartments on Table-land... 
8* or 4 8 9 
•866 1 -866 
12 
•5 
5 5 10* or 7‘5 
1 -866 -5 
2 5* or 4 
1 -866 
No. of equivalent compartments if 1 
placed in the meridian J 
3-464 8 7*794 
6 
5 4-33 3-75 
2 3-464 
25-258 
OO 
, o 
5-464 
Multiply by 0"-786 and the DeOec-1 
tioDS are — J 
do 
CD 
O 
4"-29 
Hence the eiTors produced in the astronomical amphtudes will be 9"-57 and 5"-99 ; 
which much exceed the errors 5"-236 and -3"-791 brought to light by the Sur%-ey, and 
will far more so when the attraction of the nearer parts is also taken into account. 
7. The new information regarding the nature of the country immediately north of the 
Himmalayas, does not, it thus appears, relieve this subject of its difficulties : and no geo- 
detic calculations can be of service in the problem of the Figure of the Earth, nor 
indeed in mapping the country with extreme precision, till these perplexities are 
removed, by the deflection being found and allowed for. 
Calcutta^ January 14, 1859. 
