3,54 SALTS 



(1.) Sulphate of zinc deposited from a cold 

 solution : 



1 atom sulphuric acid 5 



1 atom oxide of zinc . 5-25 

 7 atoms water 7 '8 7 5 



18-125 



(2.) Sulphate deposited from a hot solution : 



1 atom sulphuric acid 

 1 atom oxide of zinc 

 3 atoms water 



13-625 



Nitrate, ^. Nitrate of zinc. This salt has an exceeding- 

 ly disagreeable taste, and may be obtained, with 

 difficulty, in flat four-sided prisms, which deli- 

 quesce so rapidly, that it is not an easy task to 

 obtain the salt in a state fit for analysis. Its 

 constituents are 



1 atom nitric acid . 6-75 



1 atom oxide of zinc 

 () atoms water 



18-75 



Carbonate, 3. Carbonate of zinc. Two species of this 

 salt are found native, and constitute a part of 

 the bodies confounded by mineralogists under 

 the name of calcimine. 



