ON THE SOLUBILITY OF SOME PRECIPITATES. 
53 
sulphuretted hydrogen, and after long standing deposited 
traces of sulphuret of lead. 
Water, containing much nitrate of ammonia besides car- 
bonated and caustic ammonia, dissolves, judging from the 
colour produced in the filtered solution by sulphuretted hy- 
drogen, somewhat more of this salt than in the preceding 
experiment. 
X. Solubility of Oxalate of Lead. — A dilute solution of 
acetate of lead was precipitated with oxalate of ammonia 
and ammonia; the liquid filtered from the precipitate after 
long standing exhibited, on the addition of sulphuretted hy- 
drogen, a faint brownish tint when viewed from above. 
XI. Solubility of Sulphate of Lead. — 1 part of this salt 
requires 22816 parts of pure water at 52° for solution. In 
water containing sulphuric acid, 1 part of the salt requires 
36504 parts; and in water containing ammoniacal salts and 
sulphuric acid, no perceptible colour is produced by the 
addition of sulphuretted hydrogen to the filtered solution. 
XII. Solubility of the Basic Carbonate of Zinc. — 1 part 
of the salt was found to require 44642 parts water for solu- 
tion. 
XIII. Solubility of Chloride of Barium in Absolute 
Alcohol. — 1 part of the salt requires 8108 parts of cold alco- 
hol of 0.795 spec, grav.; and on boiling and then allowing 
to cool, 1 part dissolves in 66S5 parts ; but when filtered 
boiling, 1 part was found to have dissolved in 4857 parts of 
the boiling alcohol. 
XIV. Solubility of Chloride of Strontium in Alcohol. — 
1 part of the salt dissolves in 1 16.4 parts of cold alcohol of 
0.795 spec, grav., and in 262 parts boiling alcohol. — Chem. 
Gaz.^Jrom Liebig*s Annalen. 
5* 
