449 
in the length of the pendulum vibrating seconas. 
July 25, A. M. Unst. 
Clock gaining 50 ’,63. Barometer 29,84 inches. 
Temp. 
Time of coin- 
cidence. 
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. 
57,00 
58,4 
h. m. s. 
7-41.34 
49.35 
57-36 
8. 5.37 
13.39 
21.40 
29.42 
37-44 
45 46 
53.47 
9- J .49 
1°20 
1,14 
1,10 
1,05 
1,01 
0,97 
0,93 
0,89 
0,85 
0,S2 
0,79 
O 
3,17 
1,12 
1,07 
1,03 
0,99 
0,95 
0,91 
0,87 
0,83 
0,80 
481 
" 481 
481 
482 
481 
482 
482 
482 
481 
482 
- 
2.24 
2,06 
1,88 
1,74 
1,60 
1,48 
1,36 
1.24 
1,13 
1,05 
57,7 
Mean 
481,5 
479,5 
S6091,54 
1/8 
86093,12 
July 25, 
P. M 
Barometer 29,72 inches. 
58,7 
59,3 
2 . 0.27 
8.27 
16.27 
24.27 
32.26 
40.27 
48.27 
56.27 
3. 4.29 
12.29 
1,21 
1,17 
1,11 
1,06 
1,01 
0,98 
0,93 
0,90 
0,87 
0,83 
1,19 
1,14 
1,08 
1,03 
0,99 
0,95 
0,91 
0,88 
0,85 
480 
480 
4S0 
479 
481 
480 
480 
482 
480 
2,32 
2,13 
1,91 
1,74 
1,60 
1,48 
1,36 
1,27 
1,18 
59,0 
Mean 
480,2 
478,2 
86090,57 
1,67 
S 6092,24 
