CONTAINING AMMONIA. 



1 atom sulphate of zinc 10-25 



I atom sulphate of ammonia 7*125 

 7 atoms water 7'875 



25-25 



Here the sulphate of zinc retains its usual pro- 

 portion of water, and the sulphate of ammonia 

 unites to it anhydrous. 



10. Ammonio-sulphate of copper. The con- 

 stituents of this salt, according to the analysis 

 of it in my laboratory, are as follows : 



1 atom sulphate of copper 1 



I atom sulphate of ammonia 7' 125 



6 atoms water . . . 6-75 



23-875 



And this analysis exactly agrees with the state- 

 ment previously given by Berzelius, that both 

 salts retain their water of crystallization. 



11. Ammonio-carbonate of uranium. This 



beautiful salt has been described in volume II. 

 page 4. of this work. Its constituents were there 

 shown to be 



1 atom percarbonate of uranium 30-75 



3 atoms carbonate of ammonia 14-625 



4 atoms water . 4-500 



49-875 



So that each integrant particle of salt in the 

 compound retains an atom of water. 



