PHYSIOGRAPHY. 219 



Sulphuretted Hydrogen. 



SULPHURET OF ANTIMONY. (See Grey Antimony.} 

 SULPHURET OF BISMUTH. (See Bismuthine.) 

 SULPHURET OF COBALT. (See Cobalt Pyrites.) 

 SULPHURET OF COPPER. (See Vitreous Copper.) 

 SULPHURET OF LEAD. (See Galena.) 

 SULPHURET OF MANGANESE. (See Mangariblende.) 

 SULPHURET OF MERCURY. (See Cinnabar.) 

 SULPHURET OF MOLYBDENA. (See Molybdenite.) 

 SULPHURET OF SILVER. (See Vitreous Silver.) 

 SULPHURET OF TIN. (See Tin Pyrites.) 

 SULPHURET OF ZINC. (See Blende.) 



SULPHURETTED HYDROGEN. Sulphureous 



Hydrogen-Gas. MOHS. 

 Amorphous. Transparent. Expansible. 

 Sp. gr.=M81. 

 Odor of putrid eggs. 



1. It does not support combustion ; it blackens most of the metals, and 

 becomes fatal to animals, if inhaled in any considerable quantity. 



2. Analysis. 

 By BERZELIUS. 



Hydrogen 5-824 



Sulphur 94-176 



3. It is developed from sulphureous waters, both cold and warm, as at 

 Neundorf in Westphalia, and at Baaden near Vienna ; also from swamps 

 and marshes. In Italy, it is disengaged from the soil of the Solfataras, 

 and of the Fumacchio, sometimes mixed with other kinds of gas. 



In the U. States, it has been observed at numerous springs through- 

 out New York, Ohio, and other western states. On the western bank 

 of Niagara river, a mile south of the Falls, it issues from a bank, 

 which consists of a shelly limestone, including thin beds of coal and 

 Iron Pyrites; under similar circumstances also at Otsquaga creek. It 

 abounds particularly in the boiling springs of Florida. 



