380 Analyses of Books [May, 



White topaz. 



Rock crystal. Var. of quartz. 



II Red, mixed occasionally with Violet. 

 Oriental ruby. Var. of corundum. 



St y -} v — f ^™*- 



Brazilian ruby. Var. of topaz. 



Sirian garnet, "'j 



Bohemian ditto. \ Var. of garnet. 



Ceylon ditto. J 



Purple tourmaline, from the United States, ^v 



Rose tourmaline, from Brazil. J> Var, of tourmaline. 



Violet tourmaline, or siberite, from Siberia. J 



III. Blue. 



Oriental sapphire. ? Var of corundum . 

 Indigo ditto. 3 



Beryl. Var. of emerald. 

 Tourmaline, from the United States. 

 Saphir d'eau. Var. of dichroi'te. 



IV. Green. 



Oriental emerald. Var. of corundum. 

 Peruvian emerald. 



Emerald of Brazil 1 y af of tourmalint . 



Ditto of the United States. J 



V. Bluish Green. 



Oriental beiyl. Var. of corundum. 

 Siberian aquamarine. Var. of emerald. 



VI. Yellow. 



Oriental topaz. Var. of corundum. 

 Brazilian topaz. 

 Beryl. Var. of emerald. 

 Jargoon, of Ceylon. 



VII. Yellowish Green. 



Oriental peridot. Var. of corundum. 



Chrysoberyl, or \ y of w . 



Oriental chrysolite J J r 



Beryl. Var. of emerald. 



Jargoon, of Ceylon. 



Peridot. 



Peridot, of Ceylon. Var. of tourmaline. 



VIII. Violet. 



Oriental amethyst. Var. of corundum. 

 Amethyst.' Var. of quartz. 



