acceleration of the pendulum in different latitudes . 
175 
TABLE IV. 
Clock Nb. 2 in London ; Barom. mean height 29,906* inches. Cumming losing 
o,i*. daily. 
1820. 
Clock fast 
of 
Cumming. 
Clocks Gain. 
Mean 
Arc. 
Mean 
temp. 
Corrections. 
Daily vibra- 
tions. 
on 
Cumming. 
Per diem. 
on 
Cumming. 
on 
Time. 
Arc. 
Temp. 
m. S. 
S. 
s. 
s. 
0 
6 
s. 
S. 
Dec. 5 
8.45,2 
+ 
+ 
6 
IC.07,3 
82,1 
82,1 
82, 
*73 
52,8 
4,928 
3,409 
86490,337 
82,6 
82,6 
82,5 
*•73 
33,6 
4,928 
3752 
86491,18 
7 
1 1.29,9 
8 
v«r» 
00 
81,9 
81,9 
81,8 
173 
S3»25 
4,928 
3,6 
86490,328 
9 
14.! 3,6 
81,8 
81,8 
81,7 
* 73 
5 3 >2 
4,928 
3,578 
86490,206 
10 
15,36 
82,4 
82,4 
82,3 
*73 
537 
4,928 
3,622 
86490,85 
11 
16,57,6 
8i,6 
81,6 
81,5 
*73 
34 
4,928 
3,92 
86490,348 
*5 
22.27,8 
33°, 2 
82,55 
82,45 
*73 
3 1 
4,928 
2,62 
86489,998 
Corrections. 
Elev. 
+ 
>°>35 
Buoy. 
+ 
6 >3 
Corrected vi- 
brations. 
Temp. 45°. 
86496,9741 
The very near agreement of the results in Tables III. and . 
IV, with those in Tables I. and II, afforded a satisfactory 
proof, that no part of the apparatus had suffered by any of 
the accidents to which instruments are liable on a voyage of 
such length and peculiar circumstances, and against which 
the utmost piecaution and care may not always be able to 
provide. 
Rate of the clocks in London deduced from the preceding 
Tables. 
Vibrations in a mean solar day. Temperature 45°. 
Olnrfc | 
f Table I. Dec. i8z8. 86392,5673 3 
[ Table III. Dec. 1820. 863 92,3353 j 86392 ’ 45 ' 3 
Clock 2 
I Table II. March 1819. 86496,997 ] 
1 ~ 1 86496,985 5 
l Table IV. Dec. 1820. 86496,9741 J 
