614 WILLIAM LAWTON GOODWIN ON THE 
with more chlorine, and the formation of a perchloride, in presence of sodium 
chloride, is no doubt due to the existence of a salt PbCl,,2NaCl, analogous to 
PtCl,,2NaCl. This led to the hope that other similar double chlorides might 
be obtained. Accordingly, solutions were made containing two chlorides in 
molecular proportions, half a molecule of each, taking the solutions used above 
as containing one molecule. 
4(NaC1+KCl). Plate XXXVL, Diagram 1. 
. e ee Na,S,0, ¢ 
— AQ rie” 10:0 1:0769 
0:0 13:0 1:4000 
+ 1:0 14:0 : 1:5076 
44 176 "18953 
eo 18°1 1:9492 
106 17°6 1:8953 
11:8 17-0 18307 
15°9 : 14:2 15292, 
Doe | Acre 1:2600 
25°6 F 10°6 11415 
314 8-7 0:9369 
1 c.c.=0-01243 gm. iodine. 
This solution possesses a solubility almost identical with those of the simple 
salts. 
_ Manganese and Sodium Chlorides.—Chlorine hydrate was obtained easily at 
0°. No peroxide of manganese was formed until the chlorine hydrate was 
decomposed, but its formation was then rapid apparently, for the curve seems 
to run almost horizontally instead of dipping down rapidly. Unfortunately, an- 
accident stopped the experiment at 11°. 
4(NaCl+Nm(l). Plate XXXVI, Diagram m1 
t p Na,8,0, - a 
25 761-7 12°7 13843 
+19 163 17768 
3°5 17-9 1:9512 
5-6 18°7 2:0384 
75 19-0 20711 
8°8 17-9 19512 
9-8 17°8 19403 
111 17-4 1:8967 - 
1 cc. = 001243 gm. iodine. 
It is to be observed that the curve for the mixed salts takes a course 
between the curves for its two components, crossing almost exactly at the point 
