1910-11.] Specific Gravity and Displacement of Saline Solutions. 637 
CHLORIDES. 
Table No. 1 A. 
POTASSIUM CHLORIDE. MR = KOI = 74 6. 
T = 19-5°. 
Weight of Solution. 
Specific Gravity. 
Displacement. 
m. 
W. 
S. 
A. 
1/2 
1037-3000 
1-022977 
1014-001 
1/4 
1018-6500 
1-011670 
1006-899 
1/8 
1009-3250 
1-005889 
1003-416 
1/16 
1004-6625 
1-002973 
1001-684 
1/32 
1002-3312 
1-001489 
1000-841 
1/64 
100D1656 
1 000741 
1000-423 
1/128 
1000-5828 
1-000365 
1000-217 
1/256 
1000-2914 
1-000193 
1000-098 
1/512 
1000-1457 
1-000082 
1000-064 
Table No. 1 B. 
POTASSIUM CHLORIDE. MR = KCl=74-6. 
T = 19‘5°. 
m. 
S 21 . 
%• 
S 17 . 
hr- 
% + s ir- 
r o- 
d. 
1/2 
1-022986 
4 
1-022969 
4 
8 
2-9 
18 
1/4 
1-011674 
4 
1-011665 
4 
8 
3-0 
20 
1/8 
1-005895 
4 
1-005883 
4 
8 
2-1 
16 
1/16 
1-002980 
3 
1-002967 
3 
6 
3-6 
18 
1/32 
1-001494 
3 
1-001485 
4 
7 
2*2 
14 
1/64 
1-000756 
4 
1-000730 
4 
8 
3-1 
27 
1/128 
1-000368 
3 
1-000361 
3 
6 
1-5 
10 
1/256 
1-000199 
4 
1-000188 
4 
8 
2-2 
14 
1/512 
1-000088 
4 
1-000076 
4. 
8 
2-2 
14 
It is Table No. 1, series B, and refers to the experiments made with 
solutions of chloride of potassium at 19’5° recorded in Table No. 1, class A. 
In it the value, S, being the same as that recorded under S in Table No. 1 A, 
is not repeated. After the column m, which has the same signification in 
both tables, we have S 2] ; the numbers under it give for each value of m the 
mean specific gravity derived from s 21 series of observations made with 
hydrometer No. 21, and under S 17 the mean specific gravity derived from 
s 17 series of observations made with hydrometer No. 17. The mean of the 
sum of the series s 21 + s l7 is the value of S entered in Table No. 1 A. All 
the series consist of nine individual observations each, and they are to be 
taken to be of equal weight. We then obtain by the method of least squares 
the probable error (±r 0 ) of the value of S in Table No. 1 A, expressed in 
