4 , 4 $ Capt. Kater’s experiments for determining the variation 
July 24, A. M. Unst. 
Clock gaining 50 \ 6 $. Barometer 29,9 inches. 
Temp. 
rime of Coin- 
cidence. 
A c 
af vibra- 
tion. 
Mean 
Arc. 
Interval 
in 
seconds. 
No. of 
vibrations. 
Observed 
vibrations 
n 24 hours . 
Correc- 
tion for 
Arc. 
Vibrations 
n 24 hours. 
56,7 
58,0 
h. m. s. 
8. 4.15 
12.16 
20.17 
28.18 
36.20 
44.21 
52.22 
9. 0.24 
8.27 
16.29 
24.32 
1,22 
1,17 
1,12 
1,08 
1,03 
0,98 
0,94 
0,91 
0,87 
0,83 
0,80 
0 
1,19 
1,14 
1,10 
1,05 
1,00 
0,96 
0,92 
0,89 
• 0,85 
0,81 
481 
481 
481 
482 
481 
481 
482 
483 
482 
483 
S. 
2,32 
2,13 
1,99 
1,80 
1,64 
1,51 
1,39 
1,30 
1,18 
1,08 
57,3 
Mean 
481,7 
479,7 
86091,70 
1,63 
86093,33 
July 24, P. M. Barometer, 29,82 inches. 
59.7 
59.8 
1. 2.36 
10.3? 
18.36 
26.37 
34.37 
42.38 
50.39 
58.39 
2. 6.40 
14.41 
22.42 
1,21 
1,14 
1,10 
1,05 
1.02 
0,97 
0,93 
0,89 
0,85 
0,83 
0,79 
1,17 
1,12 
1,07 
1,03 
0,99 
0,95 
0,91 
0,87 
0,84 
0,81 
481 
479 
481 
480 
481 
481 
480 
481 
481 
481 
2.24 
2,06 
1,88 
1,74 
1,60 
1,48 
1,36 
1.24 
1,16 
1,08 
J 59,7 
Mean 
480,6 
478,6 
86090,87 
1,58 
86092,45 
