INTRODUCTION. 



The following consist of Silica, Aiuscm a, Ldce, &c. 



Gfamet, in rhombic dodecahedrons. 



Garnet, in trapezoidal crj'stals. 



Precions Garnet. 



Pyrope Garnet. 



Cinnamon stone. 



Idocrase. 



Ajrinite. 



Epidote. 



Augite. 



Diopside. 



Sahlite. 



Hornblende, massive. 



Hornblende, crystallized. 



TremoHte. 



Actynolite. 



Asbestns. 



Fibrous Asbestus. Amianthns. 



Hypersthene. 



Bronzite. 



Schiller Spar. 



Corundum. 



Emery. 



Kyanite. 



Topaz. 



Spinel. 



Chrysolite. 



Olivine. 



Zircon. 



Hyacinth. 



Beryl. 



Tourmaline. 



Schorl. 



Talc, foliated. 



Talc, compact. 



ilica. 



Leucite. 



Audalnsite. 



Chiastolite. 



Finite. 



Chlorite. 



Steatite. 



Soapstone. 



Felspar, crystallized. 



Felspar, with lamellar fracture. 



Glassy Felspar. 



Decomposed Felspar. 



Compact Felspar. 



Labradorite. 



Albite. 



Boracic Acid. 



Subsulphate of Alumina. 



Subphosphate of Alumina. 



Calcareous Spar, rhomb, obtained 



by cleavage. 

 Calcareous Spar, crystallized. 

 Stalactitic Carbonate of lime. 

 Calcareous Tufa. 

 Arragonite. 

 Pearl Spar. 

 Apatite. 

 Phosphorite. 

 Fluor Spar, in cubes. 

 Fluor Spar, nodular. 

 Anhydrite. 

 Selenite. 



Fibrous Gypsum. 

 Granular Gypsum. 

 Carbonate of Barytes. 

 Sulphate of Barjies. 

 Carbonate of Strontian. 

 Sulphate of Strontian. 

 Chloride of Sodium, Rock Salt. 



