492 Capt. Kater/s experiments for determining the variation 
1819, March 8, A. M. at Mr. Browne’s house, London. 
Clock gaining 13,75 in a mean solar day. Barometer 30,10 
inches. 
Temp. 
Time of coin- 
cidence. 
Arc 
of vibra- 
tion. 
Mean 
Arc. 
Interval 
in 
seconds. 
No. of 
vibrations. 
Observed 
vibrations 
in 24 hours. 
Correc- 
tion for 
Arc. 
Vibrations 
in 24 hours. 
49,8 
50,3 
h . m. s. 
10.40. 1 
48.23 
56.46 
11. 5. 9 
13.32 
21.56 
30.20 
38.44 
47. 8 
55.32 
0. 3.57 
O 
1,18 
1,12 
1,08 
1,03 
0,98 
0,94 
0,91 
0,87 
0,83 
0,80 
0,77 
O 
1,15 
1,10 
1,05 
1,00 
0,96 
0,92 
0,89 
0,85 
0,81 
0,78 
502 
503 
503 
503 
504 
504 
504 
504 
504 
505 
S. 
2,16 
1,99 
1,81 
1,64 
1,51 
1,39 
1,30 
1,19 
1,07 
1,00 
50,0 
Mean 
. 
503,6 
501,6 
86058,61 
1,51 
86060,12 
March 9, A. M. London. 
Clock gaining r,85. Barometer 30,10 inches. 
49,8 
50,5 
10.35.36 
43.59 
52.22 
11. 0.45 
9. 9 
17.34 
25.57 
34.21 
42.45 
51. 9 
59.33 
1,14 
1,09 
1,05 
1,01 
0,96 
0,92 
0,88 
0,84 
0,81 
0,78 
0,74 
1,11 
1,07 
1,03 
0,98 
0,94 
0,90 
0,86 
0,82 
0,79 
0,76 
503 
503 
503 
504 
505 
503 
504 
504 
504 
504 
2,02 
1,88 
1,74 
1,57 
1,45 
1,33 
1,21 
1 J 1 
1,02 
0,95 
50,1 
Mean 
503,7 
501,7 
86058,78 
1,43 
86060,21 
