OBSERVATIONS FOR FINDING THE DENSITY OF PC NO. 2. 
837 
Hook in water. In right-hand pan. 
gr. Scale. 
T-fF+K + (l6)-f(8) + (4)-h(2) + 0-98 27-0 
0-98 25-.’i 
0-94 13-7 
0-98 24-8 
0-94 11-6 
Air. 0-94 10*8 
^=22-3, <^=765-63. 0*98 22*9 
0-94 12-1 
0-98 22-5 
0*98 32*0 
0*94 12*8 
0-98 22*1 
0-98 24-5 
0*9646 20*18 
PC No. 2 in water (<=20*65):C!:T-|-F-|-K-t-(l6)-j-(8)-f(4)-|-(2)-|- 0*7164 grain in air (^=22*3, A=765*63). 
August 3, 1844. 100 parts =0*26 grain. 
PC No. 2 and hook in water. In right-hand pan. 
H. 
P. 
gr- 
Scale. 
18*0 
18*9 
0*41 
21*5 
17*95 
18*8 
0*40 
23*0 
0*40 
21*5 
17*5 
18*4 
0*40 
21*5 
17*4 
18*2 
0*39 
18*7 
0*40 
11*5 
17*1 
17*95 
0*40 
17*4 
16*95 
17*6 
0*44 
20*5 
0*44 
22*6 
16*6 
17*5 
0*44 
24*0 
17*36 
18*19 
0*412 
20*22 
Hook in water. 
In right-hand pan. 
gr- 
Scale. 
T 4- F + K -f (1 6) -h (8) + (4) + (2) + 0*94 
28*8 
0-94 
28*0 
0*90 
11*8 
Air. 
0*94 
22*0 
t— 
17*5, 5=744*15. 
0*90 
12*0 
0*94 
22*6 
0*94 
25*0 
0-90 
12*7 
0*94 
23*0 
0*9267 
20-31 
PC No. 2 in water (<=17*5)^!:T-|-F-fK-|-(l6)-l-(8)-l-(4)-f(2)-|- 0*5144 grain in air (<=17*5, 5=744*15). 
Apparent weight of PC No. 2 in water, weighed with platinum weights. 
Water. 
Apparent weight of PC No. 2. 
Air. 
t. 
gr- 
t. 
b. 
16*58 
6669*8603 
17*0 
753*94 
20*07 
6670*0458 
21*5 
761*72 
20*65 
6670*1155 
22*3 
765*63 
17*50 
6669*9135 
17*5 
744*15 
5 R 2 
