450 Co.pt. Kater’s experiments for determinmg the variation 
July 26, A. M. Unst: 
Clock gaining 50 *,63. Barometer 29,95 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. 
0 
57,1 
58,6 
b. m. s. 
7.42.47 
50.47 
58.47 
8. 6.48 
14.49 
22.50 
30 50 
38 51 
46.52 
54 53 
9. 2.54 
0 
1,13 
1,08 
1,04 
1,00 
0,97 
0,93 
0,89 
0,84 
0,81 
0,79 
0j75 
0 
1,10 
1,06 
1,02 
0,98 
0,95 
0,91 
0,86 
0,82 
0,80 
0,77 
480 
480 
481 
481 
481 
480 
481 
481 
481 
481 
S. 
1,98 
1,84 
1,71 
1,57 
1,48 
1,36 
1,21 
1,10 
1,05 
0,97 
47,8 
Mean 
480,7 
478,7 
86090,94 
1,43 
86092,37 
Oil was now applied to the scapement without stopping the 
clock. 
