By J. Green. 
A GROUP OF CRYSTALS. 
Starting from the left-hand upper corner and reading as near as possible in a straight line, the crystals shown are: Ist line, Tourmaline Selenite; 
and line, Copper Pyrites (two forms), Sulphur; 3rd line, Fluor spar, Sulphide of Antimony, Amethyst; 4th line, Felspar, Aragonite ; 
5th line, Quartz, Precious Gems, Calcite. The precious gems include, Chrysoberyl, Beryl, Ruby, Emerald, Topaz and Diamond. 
