OF AMMONIA. 



heat into 3 atoms water and 2 atoms protoxide 

 of azote. 



3 atoms water weigh 3-375 



2 atoms protoxide of azote 5-5 



8-875 



8*875 parts of nitrate of ammonia (if anhydrous) 

 would give out, when decomposed, 5*5 parts of 

 protoxide. 



The volume of protoxide of azote obtained, 

 enabled me to determine the weight of anhy- 

 drous nitrate of ammonia decomposed ; and the 

 difference between this weight, and that of the 

 salt decomposed in my experiment, gave me the 

 water of crystallization which my salt contained. 

 The constituents of nitrate of ammonia obtained 

 in this way are as follows : 



1 atom nitric acid 6' 75 



1 atom ammonia 2-125 



1 atom water 1'125 



10-000 



This is just the quantity of water found by Ber- 

 zelius in his analysis of this salt.* 



Davy analyzed this salt in three states : name- 

 ly, in prismatic crystals, in a fibrous state, and 

 compact. The result is as follows : 



* Ann. de Chim. LXXX. 180, 

 You II. Q 



