1815.] in the Physical Sciences. 27 



Sulphureted chyazate of potash : a deliquescent salt, soluble in 



alcohol. 



of soda : ditto, crystallizes in rhombs. 



of lime : ditto, soluble in alcohol, from 



which it may be obtained in needle-form crystals. 



of ammonia : ditto, not crystallizable. 



of magnesia : ditto, when dried has a mica- 



ceous appearance. 



of alumina : crystallizes in octahedra, which 



do not deliquesce. 



of barytes : a deliquescent salt, crystallizing 



in long slender prisms of a brilliant white. It is 

 composed of 



Sulphureted chyazic acid 30*1 



Barytes 6i)-9 



100-0 

 of strontian : a deliquescent salt, crystal- 



lizing in long slender prisms in groups radiating 

 like zeolite. 



of silver: a white Insoluble powder. 



of mercury : a white insoluble powder. 



of potash and prussiate of mercury : a bril- 



liant silvery lustre ; very soluble in hot, and Ihtle 

 soluble in cold, water. 



of protoxide of copper : a white powder, in- 



soluble in water. Its constituents are, 



Sulphureted cliyazic acid 36*855 



Protoxide of copper 63"145 



100-000 



of peroxide of copper : a bright pea-green 



liquid. 

 of protoxide of lead : a soluble salt in obtuse 



rliombs. 



of protoxide of iron : a colourless and very 



soluble salt. 



of peroxide of iron : a beautiful crimson 



I 



salt, very deliquescent. 



Tbc sulphureted chyazates of tin, bismuth, manganese, zinc, 

 colctlt, nickel, palladium, uranium, molybdenum, and chromium, 

 arc very soluble. 



I. F/tmift^ Siilpliur'ic /tcid. — The singular qualities of the fuming 

 sulphuric ru'id manufactured at Nordhausen, in (icrmany, from 

 ureen vitriol, luive lotig attracted the attention of chemists, and 

 various solutions of the anomalies which it presents have been 

 given. I'Viiircioy's c\f)i:ination of it, by affirming that it is a mix- 

 ture of f-ulpliurie and sulphurous acids, has been pretty generally 



