4$6 Capt. Kater’s experiments for determining the variation 
October 21, P. M. — at Arbury Hill. 
Clock losing 6 s , 2 in a mean solar day. Barometer 2 9,65 
inches. 
Temp. 
Time of coin- 
cidence. 
Arc 
of vibra- 
tion. 
Mean 
Arc. 
Interval 
in 
seconds. 
No. of 
vibrations. 
Observed 
vibrations 
in 34 boars. 
Correc- 
tion for 
Arc. 
Vibrations 
in 24 hours. 
O 
56,7 
56,7 
h. m. s. 
1.3346 
42,18 
50.52 
59.26 
2. 8. 0 
16.34 
25. 8 
33.43 
42.17 
50.52 
59.27 
O 
1,19 
1,13 
1,09 
1,05 
1,00 
0,96 
0,92 
0,88 
0,84 
0,81 
0,78 
O 
1,16 
1,11 
1,07 
! ,02 
0,98 
0,94 
0,90 
0,86 
0,82 
0,79 
512 
514 
514 
514 
514 
514 
515 
514 
515 
515 
s. 
2,20 
2,02 
1,88 
1,70 
1,57 
1,45 
1,33 
1,21 
1,10 
1,02 
56,7 
Mean 
514,1 
512,1 
86057,70 
1,55 
86059,25 
