in the length of the pendulum vibrating seconds. 461 
August 14, A. M. Portsoy.— 2d Series. 
Clock gaining 42 s ,! 8. Barometer 30,25 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. 
60,1 
60,5 
h. m. s. 
7.30.40 
38.36 
46.32 
54.28 
8. 2.25 
10.21 
18.18 
26.15 
34.12 
42. 9 
50. 7 
0 
1,21 
1,16 
1,11 
1,05 
1,01 
0,98 
0,94 
0,90 
0,86 
0,83 
0,79 
O 
1,18 
1,13 
1,08 
1,03 
0,99 
0,96 
0,92 
0,88 
0,84 
0,81 
476 
476 
476 
477 
476 
477 
477 
477 
477 
478 
s. 
2,28 
2,09 
1,91 
1,74 
1,61 
1,51 
1,39 
1,27 
1,16 
1,08 
60,3 
Mean 
476,7 
474,7 
86079,51 
1,60 
86081,11 
August 14, P. M. Barometer 30,27 inches. 
62,2 
62,7 
1.15.59 
23.53 
31.47 
39.42 
47 37 
55.32 
2. 3.28 
11.23 
1919 
27-14 
35.11 
1,31 
1,23 
1,18 
1,12 
1,10 
1,05 
i,01 
0.96 
0,91 
0,87 
0,83 
1,27 
1,20 
1,15 
1,11 
1,07 
1,03 
0,98 
0,93 
0,89 
0,85 
474 
474 
475 
475 
475 
476 
475 
476 
475 
477 
2,64 
2,35 
2,17 
2,02 
1,88 
1,74 
1,57 
1,42 
1,30 
1,19 
62,4 
Mean 
475,2 
473,2 
86078,36 
1,83 
86080,19 
