40 Prof. Naumann on Mineralogical Classification. 



much approved of b^ chemists, but is scai'cely to be avoided 

 in a physiographical point of view, because, without employ- 

 ing this character, the placing of various species (such as 

 sassoline, the nitrates, &c.), would have given rise to great 

 difficulties. Besides, as the chemical examination of minerals 

 always begins with the determination of their solubility or 

 insolubility in water ; we have, at least, a practical argument 

 for retaining the Hydrolites, a class which, it must be con- 

 fessed, cannot in other respects be altogether vindicated. 



It has been necessary to designate the greater sub-divisions 

 by particular names, in order that they may be expressed 

 with facility and brevity. The selection of these names was 

 attended with no small difficulty. I have boiTowed some of 

 them from Glocker, and I place no value on the other names 

 proposed ; but, on the contrary, I am desirous that other and 

 better designations should be suggested. 



SYSTEMATIC ARRANGEMENT OP MINERAL SPECIES. 



General Synopsis. 

 Class I. Oxide of Hydrogen. 



... II. Hydrolites, (?\^T' 



•' ( Anhydrous. 



... III. Chalcohydrolites, {n^drour'' 

 ... IV. Chakohaloides, {J^^^o^s. 

 ... V. Lithohaloides, { Hydrous!"'' 



VI Geolite<! (Hydrous, 



... VI. ueomes, t Anhydrous. 



... VII. Amphoterolites, {Hydrous'' 



...VIII. Chalcolites, {H^IT^^,, 



... IX. Metallic Oxides, 1?^?^"*' 

 ' ( Anhydroi 



roud. 



X. Metals. 

 . XL Galenoides or Glances. 

 . XII. Pjtitoides or Pyrites. 



XIII. Cinnabarites or Blendes, 



XIV. Thiolites. 

 XV. Anthracides. 



XVI. Asphaltides. 



