OBSERVATIONS FOR FINDING THE DENSITY OF PS. 
841 
May 22. Hook in water. 
In right-hand pan. 
gr. 
Scale. 
2-26 
23-7 
2-24 
16-5 
2*25 
20-1 
2-25 
20-0 
2-25 
20-2 
2-25 
19-4 
2-25 
19-25 
2-25 
19-3 
2-26 
23-2 
2-25 
19-0 
2*25 
19-0 
2-26 
23-45 
2-2317 
20-26 
Counterpoise balances h. in 
w. + 2-25 1 0 grains in ; 
In right-hand pan. 
gr- 
Scale. 
K -I- (32) 4- 0-20 
27-6 
0-l6 
12-4 
0-18 
20-05 
0-18 
19-95 
0-18 
20-0 
0-18 
19*5 
0-180 
19-92 
Counterpoise balances K 4- (32)-)- 0-1 802 grain. 
Hook in water £i:K4-(32) 
— 2 -O 7 O 8 grains in air. 
Hook in water. 
Id right-hand pan. 
gr- 
Scale. 
0-12 
21-2 
0-12 
21-0 
0-11 
17-1 
0-12 
20-9 
0-11 
16-9 
0-12 
20-6 
0-12 
21-8 
0-12 
27-0 
0-10 
13-15 
0-12 
16-0 
0-12 
23-9 
0-10 
18-3 
0-12 
24-0 
0-10 
17-8 
0-12 
24-0 
0-10 
18-0 
0-12 
21-4 
0-10 
17-0 
0-12 
22-3 
0-1137 
20-12 
Counterpoise balances h. in w. +0‘1134 grain in air. 
In right-hand pan. 
gr. 
Scale. 
K + (32) 4- 0-30 
28-6 
0-28 
20-4 
0-27 
20-7 
0-26 
10-3 
0-28 
20-0 
0-30 
27-65 
0-28 
19-45 
0-26 
16-25 
0-28 
17-3 
0-30 
25-8 
0-28 
19-4 
0-281 
20-53 
Counterpoise balances K 4- (32) -f- 0-2796 grain. 
Hook in water 4- (32) 4- 0-1662 grain in air. 
May 31. Hook in water. 
In right-hand pan. 
gr- 
Scale. 
0-12 
23-7 
0-10 
16-7 
0-11 
20-5 
0-11 
18-2 
0-12 
10-5 
0-14 
19-5 
0-14 
31-7 
0-11 
17-5 
0-12 
21-4 
0-10 
14-2 
0-11 
18-0 
0-12 
21-5 
0-11 
18-3 
0-12 
22-0 
0-11 
18-5 
0-12 
21-9 
0-11 
18-45 
0-1159 
19-57 
Counterpoise balances h. in w. 
4- 0-1170 grain in ; 
In right-hand pan. 
gr- 
Scale. 
K 4- (32) 4- 0-29 
24-2 
0-28 
20-8 
0-27 
16-8 
0-28 
20-0 
0-28 
19-7 
0-280 
20-3 
Counterpoise balances K-J- (32) + 0‘2792 grain. 
Hook in water K + (32) + 0‘ 1622 grain in air. 
