in the le?igth of the pendulum vibrating seconds. 463 
August 16 , A. M. Portsoy. — 2d Series. 
Clock gaining 42 s , 18. Barometer 30,18 inches. 
Temp. 
Time of coin- 
cidence. 
Arc 
of vibra- 
tion. 
Mean 
Arc. 
Interval 
in 
seconds. 
No. of 
j vibrations. 
Observed 
i vibrations 
in 24 hours. 
Correc- 
tion for 
Arc. 
Vibrations 
in 24 hours. 
58,0 
58,8 
h. m. s. 
7-26.39 
34.35 
42.31 
50.28 
58.24 
8. 6.22 
14.19 
22.16 
30.12 
38.10 
46. 8 
0 
1,18 
1,12 
1,08 
1,05 
1,00 
0,96 
0,91 
0,88 
0,85 
0,81 
0,78 
0 
1,15 
1,10 
1,06 
1,02 
0,98 
0,93 
0,89 
0,86 
0,83 
0,79 
47 6 
476 
477 
476 
478 
477 
477 
476 
478 
478 
S. 
2,16 
1,98 
1,84 
1,70 
1,57 
1,42 
1,30 
1,21 
1,13 
1,02 
58,4 
Mean 
476,9 
474,9 
86079,66 
1,53 
86081,19 
August 16 , P. M. Barometer 30,17 inches. 
60,5 
61,3 
1. 5.32 
13.26 
21.22 
29.17 
3712 
45. 8 
53. 3 
2- 0.59 
8.55 
16.51 
24.48 
1,21 
1,15 
1,11 
1,06 
1,02 
0,97 
0,9- 
0,89 
0,85 
' 0,82 
0,79 
1,18 
1,13 
1,08 
1,<)4 
0,99 
0,94 
0,90 
0,^7 
0,83 
0,80 
474 
476 
475 
475 
476 
475 
476 
476 
476 
477 
2,28 
2,09 
1,91 
1,77 
1,60 
1,45 
1,33 
1,24 
1,13 
1 ,05 
60,9 
Mean 
475,6 
473,6 
86078,67 
1,59 
36080,26 
