the Density of the Earth. 
Weights moved to positive position. 
501 
Extreme 
points. 
Divisions. 
Time. 
Point of 
rest. 
Time of mid. 
of vibration. 
28,85 
h- , 
l) 
18,4 
24 
22 
IO 20 
21 
30 1 
4,6 J 
- 
IO 20 59 
- 
- 
- 
2349 
28,3 
- 
- 
- 
23.57 
^ 9>3 
- 
- 
- 
2 3> 6 ‘7 
27>8 
- 
- 
- 
23.72 
20 
- 
- 
- 
23.8 
27.4 
- 
- 
23,83 
24 
23 
11 3 
13 ) 
54 ; 
- 
u 3 14 
20,55 
- . 
- 
- 
23.87 
23 
24 
9 
10 
451 
28 J 
- 
M 
O 
V-t 
00 
27 
' 
Motion of arm = 6,09 
Time of vibration - - =7' 3" 
1 6 
18,3 
16,2 
experiment xiii. May 25. 
Weights in negative position. 
17,2 
Weights moved to positive position. 
29,6 
25 
10 22 22 1 
24 
0 45 J 
17.4 
- 
- 
23,32 
23 
2 9 59 ) 
28,9 
2 4 
30 23 J 
- 
- 
2 3>4 
24 
36 58 j 
18,4 
23 
37 24/ 
— 
— — 
2 3 > 5 2 
22 56 
30 3 
37 7 
