^3? 



INFLAMMABLES, 79. Sulphur. 



79. SULPHUR. Yellow with a ihade of green, 

 hard, brittle, becoiping eleftric by fridion, in- 

 ioluble in water : melting and becoming liquid 

 in a low heat, burning with a blue flame and 

 intollerably fuffocating vapours which difcharge 

 moil vegetable colours, in a higher and conti- 

 nued heat evaporating in the form of vapours : 

 combinino: with mod metals. 



pafi'vunt. 



terreum. 



Pure, in an uncpmbincd ftat^. 



Pyrites nudus. Syft* nat. xii. 3./. 113. «. I. 

 Sulphur natiyum. Wall.Jyft, 2. /», 123. «. i, 

 Erimilojie. SchmeiJJer i. p 301. Kirivan 2. p. 6g, 

 Native fulphur. Thom/on chem. I. /. 31 . 4, />. 6. 



1. In a ftat£ of powder, or flowers. 



Sulphur pulverulentum. Wall»/yst. ?./. 125. ». i.e. 



t. Solid and pure. 



Of a common form and opake. Wall, fyst. 2. p. 124, «. i. c. 

 Of a common form and diaphanous. Wall.fyji, «. 1. b. 

 Fibrous or capillary. Wall, fvj't, «. 1, d. 

 In the form of cryftals. Walt.JyJl. «. 1. a. 



3. Solid and mixed with arfenip or other materials, ofareddifl^ 

 colour. 

 Sulphur arfenJcale. Wall.Jyji* 2. />. 125. «. 2. 



Found in a ftate of folution in the numerous fulphur waters of 

 Europe^ and fometimes depofited in a flate of powder in the 

 draii.- through which they run; in a folid ftaie in the mines 

 of Sicily and hlaples^ Sec. contaminated with arfenic in the 

 neighbourhood of volcanoe", and cryftallized in tables, cubes, 

 4 lided prifms Jongitudinalij and very finely ftriate, iimple 3 

 or 6-fided pyramids, or moll commonly in double 4-fided 

 pyramids, in lialy, Spain^ Normandy t and Siberia: it is ge- 

 nerally found in fmall pieces of gypfum, layers of clay, or in 

 lime: luftre a litt'e greafy, and caufes double refradion : it 

 does not diiiblve in water, but is foluble in fat oils and alka- 

 lies : ipecitic gravity 1,990. confifts entirely of fulphuric acid 

 and oxygene. 



Combined with mould or alumina which is left behind after 

 deflagration, not producing a difagreeable fmell when 

 acids are poured on it. 



Sulphur coloratum. Wall. fyd. 2. p, 125. ». 3, 



Kirnvan miner aU 2. /. 73. 



Coal blende. SchmeiJJer tniner. i, /, 303, 



