474 Capt. Kater’s experiments for determining the variation 
September 9, A. M. Leith Fort. — 2d Series. 
Clock gaining 34%! in a mean solar day. Bar. 29,9 inches. 
Temp. 
Time of 
coincidence. 
\ 
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. 
54.2 
54.3 
h. m. s. 
7-55.58 
8. 3.59 
12. 1 
20 . 3 
28. 5 
36. 7 
44.10 
52.12 
9. 0.15 
8.17 
16.19 
O 
1,16 
1,12 
1,08 
1,04 
1,01 
0,97 
0,93 
0,90 
0,88 
0,84 
0,81 
O 
1,14 
1,10 
1,06 
1,02 
0,99 
0,95 
0,91 
0,89 
0,86 
0,82 
481 
482 
482 
482 
482 
483 
482 
483 
482 
482 
S. 
2,13 
1,98 
1,84 
1,70 
1,60 
1,48 
1,36 
1,30 
1,21 
1,10 
54,2 
Mean 
482,1 
480,1 
860/5,53 
1,57 
86077,10 
September 9, P. M. Barometer 29,95 inches. 
55,5 
55,7 
1.13.37 
21.38 
29.38 
37-40 
45.41 
53.42 
2. 1.44 
9.45 
17.47 
25.49 
33.52 
1,19 
1,14 
1,10 
1,03 
1,00 
0,96 
0,92 
0,88 
0,85 
0,82 
0,79 
1,16 
1,12 
1,06 
1,01 
0,98 
0,94 
0,90 
0,86 
0,83 
0,81 
481 
480 
482 
481 
481 
482 
481 
482 
482 
483 
2,21 
2,06 
1,84 
1,67 
1,57 
1,45 
1,33 
1,21 
1,13 
1,08 
55,6 
Mean 
481,5 
479,5 
86075,07 
V 
1,56 
86076,63 
