94 
Captain Kater on the comparison, &c. 
By sections of 
the Indian arc 
r 9° 34' 44" 
12 2 55 
l i6 34 42 
The French 47 30 4 6 
English 52 2 20 
Swedish 66 29 12 
and the resulting compression, 
60471,74 fathoms 
60486,47 
60511,69 
60779 
60824,25 
60955 
By the French 
1 
304,64 
1 
305.55 
1 
3 1 3 >77 
mean 
1 
307.99 
English 
1 
1 
1 
mean 
1 
305.57 
306,40 
313.50 
308,49 
Swedish 
304,44 
1 
305,01 
1 
309,09 
mean 
1 
307.5s 
and the mean of the three means = — l - — 
3 ° 7 >SS 
As it appears that the compression obtained by employing 
the length of the degree in Lat. 16 0 34' 42" is uniformly in 
defect, whilst the results deduced from the other two sections 
are very nearly alike, it might perhaps be allowable to con- 
sider ^0^,32, 1,iean these last results, as the true com- 
pression ; and this would agree very nearly with the deduction 
of M. Laplace, from the lunar irregularities; with the result 
of Dr. Young’s interesting and novel investigation, by a 
comparison of the mean, with the superficial density of the 
earth ; and with the conjecture I have hazarded from the 
compression given by the experiments on the length of the 
pendulum at Unst and Portsoy. 
3rd August , 1 820. 
