112 
MR. W. R. BOUSFIELD: IONIC SIZE IN RELATION TO 
The duplicate density measurements corrected for differences of laboratory tempera¬ 
ture and barometric pressure were as follows :— 
Table Y.—Densities at 18° 0. of Normal KC1 and NaCl Solutions and Mixtures 
thereof. 
Volume 
KC1. 
V olume 
NaCl. 
Density. 
Mean density. 
Pyknometer No. 1. 
Pyknometer No. 2. 
4 
0 
1-044955 
1-044981 
1-04497 
3 
1 
1-043555 
1-043530 
1-04354 
2 
2 
1-042114 
1-042109 
1-04211 
i 
3 
1-040668 
1-040691 
1-04068 
0 
4 
1-039203 
1-039217 
1-03921 
The viscosity measurements were made in two groups, with an interval of three 
days between. The water constant appears to be steady in each set, but differs by a 
second for the two sets. The order of accuracy obtained is about ± 1 per thousand. 
Table VI.—Times of Flow of KOI and NaCl Solutions at 18° C. 
Volume 
KC1. 
Volume 
NaCl. 
Water test. 
Time of flow. 
Mean time. 
V■ 
— 
— 
W ater 
622-2 I 
622-2 j 
622-2 
— 
4 
0 
— 
589-2 1 
589•0 J 
589-1 
0-010374 
0 
4 
— 
647-6 ~l 
647-4 j 
647-5 
0-011433 
2 
2 
_ 
616-8 1 
616-6 J 
616-7 
0-010884 
— 
— 
Water 
622-2 
622-2 
— 
— 
Water 
623-2 'l 
622-8 ^ 
623-2 J 
623-1 
— 
3 
i 
— 
604-2 1 
604-3 / 
604-2 
0-010633 
1 
3 
— 
633-5 \ 
633-6 J 
633-5 
0-011164 
Water 
623-4 1 
623-2 J 
623-3 
— 
