termed triple Prussiates. 
535 
Analysis of Jerruretted Chyazate of Barytes, (Triple Prussiate 
of Barytes. ) 
A. 100 grains of this salt exposed to the temperature of 
340® until they no longer lost weight, parted with 16.59 grains 
of water. 
B. 10 grains of the salt were added to about eight ounces 
of water acidulated with muriatic acid to increase its solvent 
power on the salt ; when the whole was dissolved, a solution 
of supersulphate of potash was poured into it as long as it 
occasioned any precipitate, this precipitate after having been 
well washed, dried, and ignited in a platinum crucible, weighed 
7.44 grains, which, according to Berzelius's analysis of sul- 
phate of barytes, contain 4.91 grains of barytes. 
C. As this salt consists only of ferruretted chyazic acid with 
barytes and water, the quantity of the two last being ascer- . 
tained leaves for the other in the 100 grains, 34.31 grains. 
100 grains of ferruretted chyazate of barytes is therefore 
composed of 
Water A - - - - 
12.42 Black oxide of iron 1 ferruretted chyazic 
2 1 .89 Elements of Prussic acid J acid C 
Barytes B - - - 
16.59 
|34-3i 
49.10 
100.00 
Analysis of fermretted Chyazate of Per-oxide of Iron, (Blue 
Prussiate of Iron. ) 
A. I found that in order to form 100 grains of ferruretted 
chyazate of per-oxide of iron, it was necessary to add 112 
3Z2 
