484 Mr. Cavendish's Experiments to determine 
Extreme 
points. 
Divisions. 
Time. 
Point of 
rest. 
Time of mid. 
of vibration. 
Difference. 
h - , « 
/ a 
17.4 
- 
- - 
13>52 
*4 47 
14 
*3 
11 l8 46I 
19 58/ 
- 
11 19 4 
10,1 
- 
_ - 
13*3 
- 
14 2 7 
13 
14 
33 4 6 ) 
35 s 6 -J 
- 
33 3 1 
1 5 $ 
Weights moved to positive position. 
32 
28 
27 
O 2 48 -1 
3 5 6 J 
- 
0 2 59 
23 >7 
- 
- 
27,8 
3^8 
- 
- 
28,27 
25,8 
- 
- 
28,62 
27 
28 
C* Ot 
0 00 
- 
47 4 ° 
3 1 * 1 
Motion of the arm on moving weights from 
pos. to mid. - = 15,22 
mid. to pos. - = 14,5 
Time of one vibration, when in mid. position =14' 39" 
pos. position = 14 54 
These experiments are sufficient to shew, that the attraction 
of the weights on the balls is very sensible, and are also suffi- 
ciently regular to determine the quantity of this attraction 
pretty nearly, as the extreme results do not differ from each 
other by more than ~ part. But there is a circumstance in 
them, the reason of which does not readily appear, namely, 
that the effect of the attraction seems to increase, for half an 
