MINERALOGY. 



CLASS 1. (iASEOUS MINERALS. 

 ORDER 1. COMBUSTIBLE GASES. 



Names of Species. Localities. 



1 Hydrogen (Not found pure). 



2 Carburetted hydrogen (Sec Mineralogy, p. 128). 



3 Sulphuretted hydrogen (See Mineralogy, p. 141). 



4 Phosphuretted hydrogen (Sometimes found in marshes). 



ORDER it. NON-COMBUSTIBLE GASES. 



5 Oxygen (Sometimes found to predominate in the air given out 



by springs). 



6 Nitrogen (See Mineralogy, p. 133). 



7 Carbonic acid (See Mineralogy, p. 134). 



8 Atmospheric air (Sometimes evolved from springs). 



CLASS II. LIQUID MINERALS, NOT COMBUSTIBLE. 



ORDER I. LIQUID ACIDS. 



9 Hydrous sulphuric acid (See Mineralogy, p. 150). 



ORDER II. LIQUID MINERALS, NOT ACID. 



10 Atmospheric water (See Mineralogy, p. 178). 



11 Sea water (See Mineralogy, p. 179). 



