THE CHEMICAL ARRANGEMENT. 



307 



Genus IV. ARSENATE. 

 Cupric Olivenite. 



*Hydrated 



Cobaltic 



Hydrated 

 Nickelic 



Hydrated 

 Ferric 



Hydrated 



Calcic 

 Hydrated 



Erinite. 

 Copper Mica. 

 Aphanesite. 

 Euchroite. 



Cobalt Bloom. 

 Nickel Green. 



Cube Ore. 

 Skorodite. 



Pharmacolite. 

 Haidingerite. 

 APPENDIX TO GENUS IV. 

 (Combination of a phosphate with an arsenate.) 



*Calcic phosphate & plumbic ar- 

 senate Hedyphane. 



Genus V. CHROMATE. 



SECTION A. SIMPLE. 



Plumbic Red Lead Ore. 



SECTION B. MIXED. 

 *Cupric fe plumbic Vauquelinite. 



Genus VI. MOLYBDATE. 

 Plumbic Yellow Lead Ore. 



