45 2 Capt. Kater’s experiments for determining the variation 
July 28, A. M. — Unst. 
Clock gaining 50 s ,63. Barometer 30,05 inches. 
Temp. 
Time of coin- 
cidence. 
Arc 
of vibra- 
tion. 
Mean 
Arc. 
Interval 
in 
seconds. 
No. of 
vibrations. 
Observed 
vibrations 
in 34 hours. 
Correc- 
tion for 
Arc. 
Vibrations 
in 24 hours. 
O 
53.8 
54.8 
h. m. s. 
8. 2. 7 
10. 7 
18. 7 
26. 7 
34. 7 
42. 8 
50. 9 
58. 9 
9. 6.11 
14.12 
22.14 
1,°29 
1,13 
1,08 
1,03 
1,01 
0,96 
0,92 
0,88 
0,85 
0,82 
0,78 
0 
1,21 
1,10 
1,05 
1.02 
0.98 
0,94 
0,90 
0,86 
0,83 
0,80 
480 
480 
480 
480 
481 
481 
480 
482 
481 
482 
9. 
2,40 
1,98 
1,80 
1,70 
1,57 
1,45 
1,33 
1,21 
1,13 
1,05 
54,3 
Mean 
4SO,7 
478,7 
86090,95 
1,56 
86092,51 
July 28, P. M. Barometer 30,2 inches. 
57.6 
58,5 
2.12. 1 
19.59 
27.57 
35.55 
43.55 
51.53 
3. 9.53 
7-52 
15.53 
23.53 
32.53 
1,27 
1,22 
1,17 
1,11 
1,06 
1,02 
0,98 
0,93 
0,89 
0,85 
0,82 
1,24 
1,19 
1,14 
1,08 
1,04 
1,00 
0,95 
0,91 
0,87 
0,83 
478 
478 
478 
480 
478 
480 
479 
481 
480 
480 
2,52 
2,32 
2.13 
1,91 
1,77 
1,64 
1,48 
1,36 
1,24 
1.13 
58,0 
Mean 
479,2 
477,2 
86089,82 
1,75 
86091,57 
