34 
PROFESSOR W. A. TILDEN AND MR, W. A. SHENSTONE ON THE 
Beyond this temperature it was useless to attempt quantitative experiments, as 
we already have nearly 20 parts of salt dissolved in 1 part of water. It may he 
observed that this corresponds to rather more than two molecules of silver nitrate, 
AgN0 3 , to one molecule of water. This, therefore, is an example of a solution in 
which it is difficult to conceive the existence of liquid hydrates. It must rather be 
regarded as melted silver nitrate mixed with a small quantity of water. 
Potassium chlorate.—Melting point 359°. 
Temperature. 
Parts of salt in 100 parts of water. 
120 
73-7 1 
136 
98-9 
> in glass tube. 
160 
148-0 
190 
183-0 
in metal tube. 
(See Plate 2.) 
Barium chlorate, Ba(C10 3 ) 3 .—Melting point of the anhydrous salt about 400°. 
Temperature. 
Parts of Ba(CI0 3 ) 2 dissolved by 100 parts 
of water. 
o 
116 
195-5 ] 
135 
287'4 > in glass tube. 
146 
365-6 J 
180 
522"6 in metal tube. 
(See Plate 2.) 
This salt gave some trouble, partly on account of its considerable solubility, partly 
from the viscosity of the solution. No oxygen was found in any of the tubes after 
heating, but two tubes were split in a somewhat singular manner by the solution in 
process of solidification during cooling. 
Potassium dichromate, K 3 Cr 2 0 7 . —Melting point about 400°. 
Temperature. 
Parts of salt dissolved by 100 parts 
of water. 
O 
117 
128-3 1 
129 
148 
153-8 
200-6 
>• in glass tube. 
180 
262 7 J 
(See Plate 2.) 
