THE ROYAL ARTILLERY INSTITUTION. 
147 
Hence, taking the sum in each of the above series, we have— 
5,700 vibrations in 1896*7 seconds. 
3,400 „ 1129*7 „ 
3,400 „ 1130-7 „ 
12,500 4157-1 
Chronometer fast 6"9 
12,500 4150-2 
Or the time of one small oscillation =0'3320 seconds. 
APPENDIX II. 
Experiments made to determine the time of a small oscillation of the pen- 
dulum of instrument No. 32. 
The same precautions were adopted as in the case of instrument No. 24. 
5th March 1861. 
100 vibrations in 33‘3 seconds. 
100 
99 
33-3 
jj 
150 
99 
49-9 
150 
50-1 
» 
100 
99 
33-4 
300 
99 
99-8 
200 
66-9 
200 
66-8 
)> 
200 
22 
67-1 
200 
99 
66-9 
>» 
200 
99 
66-9 
200 
66-9 
200 
99 
66-8 
200 
99 
66-8 
200 
99 
66-9 
200 
99 
67-0 
200 
67-0 
200 
22 
$7-0 
200 
22 
67*0 
)> 
200 
9y 
66-9 
” 
400 
133-6 
400 
99 
133-4 
400 
99 
133-5 
4,900 
1636-9 
Chronometer fast 1*2 
1635-7 
Or one small oscillation in 0-3337 seconds. 
