ON THE PRIMITIVE FORM OF CRYSTALS. 349 



III. — Prismatic System. 



Iolite. 

 Diallage. 



Carbonate of Bary tes. 



Strontian. 



— Ammonia. 



■ Potash. 



Copper. 



Petalite. 

 Harmotome. 

 Chromate of Lead. 

 Apophyllite from Faroe. 

 Mesotype from Auvergne. 



— — » Iceland. 



Glenarbuck. 



Nadelstein from Faroe. 

 Chabasie. 

 Indurated Talc. 

 Sulpho-carbonate of Lead 

 Sulphate of Copper and 

 Iron. 



Ammonia. 



Cobalt. 



Ammonia and 



Magnesia. 

 ■ Soda and Mag- 

 nesia. 



■ Manganese. 



" -'- Zinc, (certain 



specimens.) 



Nitrate of Silver. 



Ammonia. 



— Lime. 



■ Strontian, (certain 



specimens. ) 



Copper. 



Zinc. 



— — Mercury. 



Bismuth. 



Nitrite of Lead, (certain spe- 

 cimens. ) 



Muriate of Mercury. 



— — — Magnesia. 



Barytes. 



Acetate of Lead. 



Zinc. 



Hyper-oxymuriate of Potash. 



Phosphate of Soda. 



i I ron . 



Oxalate of Ammonia. 



Super-oxalate of Potash. 



Super-chromate of Potash. 



Crystallized Cheltenham 

 Salts. 



Murio-sulphate of Magnesia 



and Iron. 



Benzoate of Ammonia. 



Chromic Acid. 



Benzoic Acid. 



3 



