an a Branch of Natural History^ ^c. 9fy\ 



Sect. III. Simple inflammable, not Metallic SubstaneeS' 

 (Inflammable crystals), 2 anomalous genera. 



Division II. Substances containing one or more elements 



SUPPORTING combustion. 



Corresponding to the Lithophanous, and to some of the Amphi- 

 phanous cryslals. 



Sect. I. Substances containing Oxygen, as a predominating electro^ 

 negative element, 



A. Oxides (in general of the lowest degree of substances capable of many de- 



grees of oxidation) of iron, tungsten, manganese, zinc, titanium, ura- 

 nium, either free or combined with one another ( Amphiphanous Hemom 

 titesj, 18 genera anomalous. 



B. Oxides of tin, of silicium, of aluminium, either free or combined with 



oxiddfe of metals, or of metalloids (Lithophanous crystals J, 113 normal 

 genera. 

 -C. Acids : boric, tungstic, molybdic, phosphoric, arsenic, sulphuric, carbonic, 

 nitric, either free or combined with oxides of metals and of metalloids 

 (Lithophanous alysimous and hydrolysimous), 65 normal genera. 



Sect. II. Substances containing Jiuorine as predominating electro 



negative element. 



Order of the Fluorideous in the Lithophanous alysimous, 4 normal genera. 



«S£CT. III. Substances containing Chlorine, as predominating elect tc 



negative element, 



Lithophanous, alysimous chlorideous, and 1 



, , - . . [ normal genera. 



hydrolystmous munaqueoiis, 3 ° 



N. B. These last 12 genera normal as what relates to the class, are place 



differently in the Natural History classification, in regard to the other genera 



of the class. 



ILLUSTRATION OF THE METHOD. 



To complete the general idea which we have been endeavour- 

 ing to give of our views on the subject of the classification of 

 minerals, it may be proper to extract from the work already al- 

 luded to, the entire description of a genus or two, in order to 

 show the way in which we consider this part of the subject 

 ought to be treated. 



First instance taken from the Metallophanous Malleable Sim- 

 ple Metals. 



