290 
DR. KANE ON THE CHEMICAL HISTORY 
The analyses A. B. and C. would tend to show that this salt may exist in two 
degrees of hydration, but I rather think that the difference is not important, for in 
heating the other specimens I could not trace any distinct term at which an inter- 
ruption to the evolution of the water occurred. In the first examples, the specimens 
had been dried in the stove at a temperature which would have probably rendered 
them quite anhydrous, had they been exposed to its influence for a much longer time. 
I shall exhibit the results of all the analyses as follows : — 
A. by Water. 
Water .... 8 - 80 
Sulphuric acid . 611 
Palladium . . . 73'68 
Oxygen and loss . 1 1-41 
B. by Potash. 
8-36 
6-65 
73-49 
11-50 
100-00 
100-00 
C. by Potash. 
Water 13-55 
Palladium . . . 70 " 02 
Sulphuric acid . .5 ^ 
Oxygen and loss . j 
D. I. 
14-26 
68-91 
7’15 
9-68 
D. II. by Ammonia. 
14-58 
68-53 
6-94 
9-95 
100-00 
100-00 
100-00 
It is thus abundantly evident that there exists but the one basic sulphate of palla- 
dium which may be prepared by the action of water or of any alkali upon the sul- 
phate, and the analyses given indicate that the dry salt has the formula S 0 3 -}- 8 Pd O, 
from the per cent, composition of which none of the results found vary much, whilst 
the mean of all coincides completely with it. Thus, 
Theory. 
8 Pd . = 426-4 80-38 
8 0 = 64-0 12-06 
S0 3 = 40-1 7‘56 
Mean of 
analyses abstracting water. 
80-72 
11-42 
7‘86 
530-5 100-00 
100-00 
The two hydrated states of this salt are accurately expressed by the formulae 
S O s + 8 . Pd O + 6 II 0, and S 0 3 + 8 . Pd O + 10 II 0, 
which give 
8 
in numbers, 
Pd = 426-4 
72-96 
8 Pd = 
426-4 
68-72 
8 
O = 64-0 
10-95 
80 = 
64-0 
10-32 
S 
O s = 40-1 
6-85 
s o, = 
40-1 
6-47 
6 
.110= 54-0 
9-24 
10. IIO = 
90-0 
14*49 
584-5 
100-00 
6205 
100-00 
