as a Branch of Natural History^ ^c. 257 



Sub. Ord. or Fam. I.—ANHYDRO-PHOSPHATIDEOUS. 



With the blowpipe in the matrass not giving out any water nor smell of 

 garlic. 



Gen, — Apatite ; Wagnerite ; Klaprothite, or blue feldspar of Krieglach ; 

 phosphate of lead ; amblygonite. 



Sub. Ord. or Fam. II HYDRO-PHOSPHATIDEOUS. 



With the blowpipe in the matrass giving water and losing their transpa- 

 rency, but not emitting any smell of garlic. 



Gen. — Wavelite ; kakoxen ; uranite ; Vivianite, or phosphate of iron ; 

 hydrophosphate of copper ; Libethenite (Breithaupt). 



Sub. OaD. III.— ARSENI-PHOSPHATIDEOUS. 



In the matrass, or in the open tube, or on charcoal, with the blowpipe 

 giving out arsenical fumes, with the. smell of garlic. 



Gen. — Arseniferous phosphate of lead ; arseniferous Libethenite, or phos- 

 phate of copper. 



Order X.— ARSENIDEOUS. 



Chem. Nat. — Arseniates. 



With the blowpipe, melting with borax and salt of phosphorus, and disen- 

 gaging a smell of garlic. Melted with boric acid, the fragment of iron -wire 

 introduced in the globule remain unchanged and unmelted. Soluble with- 

 out effervescing in acids. Soft, scratchmg at most calcareous spar. 



Gen — Arseniate of lime (pharmacolite) ; arseniate of lead ; olivenite (pris- 

 matic arseniate of copper) ; copper mica (rhomboidal arseniate of copper) ; 

 liriconite or linzenerz (octohedral arseniate of copper) ; euchroite ; arseniate 

 of iron ; skorodite ; arseniate of cobalt ; arseniate of nickeL 



Order XI.— SULPHATIDEOUS. 



Gen* Nat, — Sulphates. 



Fusible with the blowpipe in borax and in salt of phosphorus, giving a 

 brown colour to a glass of silica and soda, with which they are fused. 



Sub. Ord. I.— ANHYDRO-SULPHATIDEOUS. 



Not giving out water in the matrass with the blowpipe ; insoluble in cold 

 acids, or but very imperfectly soluble in heated acids. Scratch calcareous 

 spar, or gypsum. 



Gen — Baritine, or heavy spar ; celestine, or sulphate of strontites ; kars- 

 tenite, or anhydro-sulphate of lime ; sulphate of lead ; glauberite, or Brong- 

 niartine ? 



Appendix. — Polyhalite. 



Sub. Ord. II.— HYDRO-SULPHATIDEOUS. 



Giving out water in the matrass with the blowpipe, and losing their trans- 

 parency. Soluble in acids. Scratched by calcareous spar. 

 Gen, Gypsum. 



Appendix. — Alunite, or alumstone ? 

 JANUARY — MARCH 1832. S^ 



