DR. TURNER ON CHLORIDE OF BARIUM. 
299 
hesitate to adopt it. I conclude, accordingly, that 100 parts of chloride of 
barium correspond to 137.63 parts of chloride of silver; and as, consistently 
with the preceding researches, this quantity of hornsilver contains 34.016 
parts of chlorine, it follows that chloride of barium consists of 
Barium 65.984 
Chlorine 34.016 
100.000 
Its constitution according to Dr. Thomson and Berzelius is shown by the 
following numbers : 
Thomson. 
Berzelius. 
Barium 
. . . . 66.037 .... 
65.926 
Chlorine . . . . 
.... 33.963 .... 
34.074 
100.000 
100.000 
It is impracticable, from the composition of chloride of barium as above 
stated, to make any satisfactory inference relative to the real equivalent of 
barium, because the real equivalent of chlorine is not yet clearly ascertained. 
By Dr. Thomson it is estimated at 36, and by Berzelius at 35.43 ; and on 
calculating the equivalent of barium according to both estimates, the following- 
result will be obtained. 
Barium 69.832 68.726 
Chlorine 36.000 35.430 
105.832 104.156 
Hence if 36 is the equivalent of chlorine, that of barium will be 69.832, or 
very near 70 as stated by Dr. Thomson ; but if the calculation be continued, 
still taking the results of my experiments as its basis, the equivalent of sul- 
phuric acid will turn out to be 40.901 instead of 40. From these considera- 
tions it appears evident that at least one of the equivalent numbers concerned 
in the calculation must be incorrect. I abstain, however, from offering any 
further opinion on this point at present, as it will form the subject of another 
communication. 
2 q 2 
