in the length of the pendulum vibrating seconds. 499 
May 15, A. M. Shanklin Farm. 
Clock losing 9 s , 4. Barometer 30,05 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. 
60,5 
61,4 
h. m. s. 
9.18.29 
26.55 
35.22 
43.49 
52.16 
10. 0.42 
9. 9 
17.37 
26. 5 
34.33 
43. 1 
O 
1,18 
1,12 
1,07 
1,02 
0,97 
0,93 
0,90 
0,87 
0,83 
0,79 
0,76 
O 
1,15 
1,09 
1,04 
0,99 
0,95 
0,91 
0,88 
0,85 
0,81 
0,77 
506 
507 
507 
507 
506 
507 
508 
508 
508 
508 
S. 
2.17 
1,95 
1,77 
1,60 
1,48 
1,36 
1,27 
1,29 
1.18 
0,97 
60,9 
Mean 
507,2 
505,2 
86049,94 
1,50 
86051,44 
May 15, P. M. Barometer 30,05 inches. 
61.3 
61.4 
0. 31.38 
40. 4 
48.31 
56.58 
1. 5.24 
13.51 
22.18 
31.46 
39.13 
47.40 
56. 8 
1,17 
1,12 
1,07 
1,02 
0,98 
0,93 
0,89 
0,85 
0,82 
0,78 
0,75 
1,14 
1,09 
1,04 
1,00 
0,95 
0,91 
0,87 
0,83 
0,80 
0,76 
506 
507 
507 
506 
507 
507 
508 
507 
507 
508 
/ 
2.13 
1,95 
1,78 
1,64 
1,48 
1,36 
1,24 
1.13 
1,05 
0,95 
61,3 
Mean 
507 
505 
86049,81 
1,47 
86051,28 
3T 
MDCCCXIX 
