in the length of the pendulum vibrating seconds. 453 
August 6 , A. M. at Portsoy.— 1st Series. 
Clock gaining 37', 63 in a mean solar day. Barometer 
2 9£5 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. 
64°8 
64,8 
h. m. s, 
7.38.22 
46.30 
54.39 
8 . 2.47 
10.56 
19. 5 
27-14 
35.23 
43.33 
51.42 
59.51 
0 
1,16 
1,12 
1,07 
1,03 
0,99 
0,94 
0,90 
0,87 
0,84 
0,80 
0,76 
O 
1,14 
1,09 
1,05 
1,01 
0,96 
0,92 
0,88 
0,85 
0,82 
0,78 
488 
489 
488 
489 
489 
489 
489 
490 
489 
489 
s. 
2,13 
1,95 
1,80 
1,67 
1,51 
1,39 
1,27 
1,18 
1,10 
1,00 
64,8 
Mean 
488,9 
486,9 
86084,03 
1,50 
86085,53 
August 6 , P. M. Barometer 30,0 inches. 
64,8 
65,7 
1. 0.42 
8.48 
16.54 
25. 1 
33. 8 
41.15 
49.22 
57-29 
2. 5.3 6 
13.43 
21.51 
1,23 
1,16 
1,12 
1,05 
1,02 
0,98 
0,93 
0.89 
0,85 
0,83 
0,79 
1,19 
1.14 
1,08 
1,03 
1,00 
0,95 
0,91 
0,87 
0,84 
0,81 
486 
486 
487 
487 
4S7 
487 
487 
48/ 
487 
488 
2,32 
2,13 
1,91 
1,74 
1,64 
1,4S 
1,36 
1,24 
1,16 
1,07 
65,2 
Mean 
486,9 
484,9 
86082,58 
1,61 
86084,19 
