OBSERVATIONS FOR FINDING THE DENSITY OF PC No. 4. 
8o.) 
1*12 
21*0 
1*08 
20*5 
7*87 
8*8 
1*08 
19*0 
7*86 
8*44 
770*92 
8*77 
1*0909 
20*47 
Counterpoise in air (C = 8*44, F=770*93, E=8*77) balances PC and h. in w. (B=7*86) + 1‘0899 gr. in air. 
In right-hand pan. 
gr. Scale. 
T-hF-f K + L-|-R + (l6)-h(4)+M0 15*95 
1*11 22*65 
1*10 16*55 
1*11 23*5 
1*105 19*66 
Counterpoise balances T -|-F-t-K-fL-|- R -l-(l6)-l-(4)-l- 1*1057 grain. 
PC andh. in w. (B=7*86):iiT + F-l-K + L-l-R + (l6)-i- (4) + 0*0158 gr. in air (C = 8*44, F= 770*92, E=8*77). 
April 29 . PC and hook in water. In right-hand pan. 
B. 
C. F. E. 
gr- 
Scale. 
11*1 
10*5 761*53 11 
1*10 
27*0 
1*06 
14*7 
1*10 
27*5 
1*06 
17*9 
1*08 
20*4 
1*08 
25*0 
1*08 
20*5 
11*05 
1*06 
17*1 
1*08 
22*0 
1*06 
21*3 
1*06 
21*3 
11*03 
1*04 
19*0 
11*01 
761*57 ll'o 
1*06 
22*6 
1*04 
20*5 
1*00 
12*3 
1*04 
20*5 
1*02 
16*7 
11 
11*55 
1*04 
20*0 
11*04 
10*84 761*55 11*2 
1*0589 
20*35 
Counterpoise in air (C= 
10*84, F=761*55, E=11*25) balances PC and h. 
in w. (B=r 
11*04)+ 1*0577 gr. in 
In right-hand pan. 
ST- 
Scale. 
T + F + K + L + R + (16) + (4)+1*18 
23*7 
1*16 
20*7 
1*16 
17*0 
1*16 
15*0 
1*18 
24*4 
1*168 
20*18 
Counterpoise balances T + F + K +L + R + (l6) + (4) + 1*1674 grain. 
PCandh.inw.(B=ll*04)£iT + F + K + L + R + (l6) + (4) + 0*1097gr. in a.(C = 10*85, F=76l*55, E= 11*25). 
April 30. 
PC and hook in water. 
In right-hand pan. 
B. 
C. 
F. 
E. gr. 
Scale. 
10 
10*7 
763*2 
11*1 1*08 
25*0 
1*04 17*5 
1*08 23*5 
1*04 13*0 
1*08 22*9 
1*04 12*5 
1*07 21*5 
10*05 
