ON THE PRIMITIVE FORMS OF CRYSTALS. 59 



Nitrate of silver. 



15 ammonia. 



lime. 



strontian, certain specimens. 



copper. 



zinc. 



20 mercury. 



bismuth. 



Muriate of mercury. 



magnesia. 



Acetate of lead. • 

 25 zinc. 



Hyper-oxmuriate of potash. 



Phosphate of soda. 



Oxalate of ammonia. 



Super-oxalate of potash. 

 30 Crystallised Cheltenham salts. 



Murio-sulphate of magnesia and iron. 



Benzoate of Ammonia. 



Chromic acid. 



Benzoic acid. 

 35 Boracic acid. 



Succinic acid. 



Hydrate of Barytes. 



Super-tartrate of potash. 



Tartrate of potash and antimony. 

 40 Diallage. 



Spermaceti. 



Hypo-sulphite of lime *. 



* See Edinburgh. Philosophical Journal, N° I. p. 15. 



