OBSERVATIONS FOR FINDING THE DENSITY OF PS. 
8:39 
In right-hand pan. 
gr- 
Scale. 
K + (32) + 0-18 
17*15 
0*19 
20*55 
0*20 
23*87 
0*190 
20*64 
Counterpoise balances K + (32) + 0’1 884 grain. 
Hook in water £i:K + (32)— 2*1088 grains in air. 
April 8. Hook in water. 
In right-hand pan. 
gr- 
Scale. 
2*30 
18*0 
2*30 
20*5 
2*30 ' 
18*8 
2*30 
19*3 
2*30 
19*5 
2*30 
18*5 
2*30 
23*1 
2*30 
18*9 
2*30 
20*2 
2*30 
19*2 
2*300 
19*6 
Counterpoise balances hook in water + 2*3011 gr. in 
In right-hand pan. 
gr- 
Scale. 
K + (32) + 0*18 
18*05 
0*19 
21*7 
0*18 
18*0 
0*1883 
19*25 
Counterpoise balances K + (32) + 0*1902 grain. 
Hook in water £l:K + (32) — 2* 
1109 grains in air. 
April 16. Hook in water 
In right-hand pan. 
gr- 
Scale. 
2*30 
18*9 
2*30 
19*0 
2*30 
19*0 
2*30 
19*0 
2*30 
19*5 
2*30 
20*0 
2*30 
20*7 
2*30 
20*0 
2*300 
19*51 
Counterpoise balances hook in water+ 2*3013 gr. in 
In right-hand pan. 
gr- 
Scale. 
K + (32) + 0-18 
17-65 
0*18 
18*55 
0*19 
19*95 
0*19 
21*65 
0*19 
21*8 
0*18 
16*8 
0*185 
19*4 
Counterpoise balances K + (32) + 0*1865 grain. 
Hook in water £i:K + (32) — 2*1143 grains in air. 
Hook in water. 
In right-hand pan. 
gr- 
Scale. 
2*30 
17*1 
2*30 
18*2 
2*30 
18*5 
2*30 
18*9 
2*30 
18*9 
2*30 
19*9 
2*30 
21*5 
2*30 
19*0 
2*30 
18*5 
2*300 
18*94 
Counterpoise balances hook in water+ 2*3002 
April 17- In right-hand pan. 
gr- 
Scale. 
K + (32) + 0*18 
15*9 
0*19 
17*6 
0*22 
29*05 
0*18 
15*3 
0*19 
15*7 
0*20 
21*05 
0*1933 
19*1 
Counterpoise balances K + (32) + 0*1956 g 
Hook in water siK + (32) — 2*1046 grains 
Hook in water. 
In right-hand pan. 
gr- 
Scale. 
2*30 
31-0 
2*24 
12*1 
2*28 
25*0 
2*27 
22*9 
2*26 
19*7 
2*26 
19*0 
2*28 
25*0 
2*26 
18-2 
2*27 
20*5 
2*26 
18*0 
2*28 
21*0 
2*26 
17*0 
2*28 
20*9 
2*26 
19*5 
2*28 
21*0 
2*30 
26*5 
2*26 
15*6 
2*28 
18*0 
2*30 
24*8 
2'28 
15*0 
2*30 
24*5 
2*28 
19*0 
2*2745 
20*65 
Counterpoise balances hook in water + 2*2727 
April 30. In right-hand pan. 
gr- 
Scale. 
K + (32) + 0*20 
24*0 
0*18 
14*8 
0*19 
18*2 
0*20 
22'7 
