VIBRATIONS MADE BY AN INVARIABLE PENDULUM. 
243 
Altona ; September and October 1828. Experiments with Pendulum 12. 
Therm. 
Barom. 
Vibrations. 
Corrected to 58.32. 
Sept. 20 
. . 60.93 . . 
30.267 . 
. 85968.46 
. 
85969.61 
20 
. . 60.95 . . 
30.267 . 
. 85968.47 
• 
85969.63 
20 
. . 60.52 . . 
30.243 . 
. 85968.54 
. 
85969.51 
20 
. . 60.42 . . 
30.219 . 
. 85968.54 
• 
85969.46 
21 
. . 59.63 . . 
30.139 . 
. 85968.91 
. 
85969.49 
21 
. . 60.10 . . 
30.135 . 
. 85968.74 
• 
85969.52 
21 
. . 60.33 . . 
30.115 . 
.. 85968.81 
• 
85969.69 
22 
. . 60.55 . . 
29.855 . 
. 85968.64 
• 
85969.62 
22 
. . 60.60 . . 
29.873 . 
. 85968.67 
. 
85969.67 
23 
. . 60.71 . . 
29.994 . 
. 85968.73 
• 
85969.78 
Oct. 1 
. . 60.17 • • 
29.566 . 
. 85969.16 
• 
85969.97 
1 
. . 60.30 . . 
29.578 . 
. 85969.17 
• 
85970.04 
2 
. . 60.35 . . 
29.688 . 
. 85969.18 
. 
85970.07 
2 
. . 60.02 . . 
29.688 . 
. 85969.29 
• 
85970.04 
3 
. . 59.40 . . 
29.976 . 
. 85969.45 
. 
85969.93 
4 
. . 58.55 . . 
29.913 . 
. 85969.62 
• 
85969.72 
8 
. . 57.50 . . 
29.381 . 
. 85970.19 
• 
85969.83 
8 
. . 56.70 . . 
29.433 . 
. 85970.49 
. 
85969.78 
15 
. . 55.05 . . 
30.030 . 
. 85971.25 
. 
85969.81 
15 
. . 54.60 . . 
30.030 . 
. 85971.35 
. 
85969.71 
21 
. . 53.70 . . 
30.195 . 
. 85971.89 
. 
85969.86 
22 
. . 54.03 . . 
30.041 . 
. 85971.74 
• 
85969.86 
23 
. . 55.02 . . 
30.041 . 
. 85971.29 
. 
85969.84 
23 
. . 55.40 . . 
29.835 . 
. 85971.10 
. 
85969.82 
24 
. . 55.40 . . 
29.982 . 
. 85971.20 
. 
85969.92 
24 
. . 55.43 . . 
29.982 . 
. 85971.20 
• • 
85969.93 
58.32 
29.941 
85969.77 
85969.77 
Red n . 
for 29.94 inches of air at 
58.32 
+ 10.07 
85979.84 
