INFLAMMABLES. 79. Sulpluir. 2391 
Found frequently in the neighbourhood of volcanoes,- efpccially 
where .-rnirnal recrements have lain depofitcd lor a long time, 
and alfo in other parts, as in fome lakes of Spain and Germany: 
colour grey or yellow, or if combined with hituinirioas earths 
brown, blackifti or black : it burns llowly with a bluifh 
flame, leaving a refiduum in proportion to the earthy matter 
with which it is mixed. 
^ffoticua. Combined witli lime or potafs which it leaves behind aftef 
deflagration, fmclling like rotten egp either fponta- 
iieoufly dr when acids are poured on it. 
Hepar of fulphur. Schmeijfer miner . i. /. 303. 
Liver of fulphur. Kir-ivan miner, z. p. 83. 
Sulphuret of potafs. Thomfon cbem, l. /.470. 
Found in a ftate of folution in all fulphur waters, and is eafily 
detefled by its difagreeable fmcll and tafte, and by its readily 
tarnifhing fdver and becoming milky with acids and black with 
acetite of lead ; it is alfo, though rarely, found in a ffate of 
powder at the boitom of lakes : colour brown, not unlike the 
liver of animals, but becoming green and even white when 
expofed to the air; its talle is acid, cauflic, and bitter,- and 
it leaves a brown llain on the fein j it converts vegetable blues 
to green and foon dettroys them : when expofed to a violent 
heat, the fulphur fublinies, and leaves behind the potafs or 
foda in a pure ftate. 
hritesi Intimately combined with iron, with a metallic fplcD<four> 
of a ftraw-yellcw colour and common form. 
Pyrites ainorphus* Syst, nat. xii. 3 * P* ^* 5 ' 
Sulphur infovme. WalLfift, z. «. 4. 
Sulphur mundic. Bei-kenh. eutl. p. zsS. 
Sulphur pyrites. Sulphureous mundic.- Schm.ii/i, i.p.lii. 
Fyrites. Kimxan mineral, z, p. 75, 76. 
Sulphat of iron. 'Thom/m ehem. 4. p. 51* 
Found in every part of the globe, occuring in almoft evety rock 
find vein, or forming malTes or veins of itfelf; hard, frequently 
mouldering and lofing its metallic fplendour, opake, brittle* 
melting with difficulty, and fometimes attraacd by the mag. 
net; frequently containing copper, arfenlc* or alumina » 
breaking into indeterminate fragments, of fi fomewhat radi- 
ated texture or eompad, with a polilhed refleaing furfacC atid 
gradually palling into the cfyftalllzed ft.te: not foluble in 
muriatic acid, but decompofing when in contaft with am and 
taoifture and producing heat and fulphuric acid: like the 
two following fpecies, ftriltes fire with fteel : it confills of 
iron ore mineralized by fulphur : fpecific gravity from 3,440. 
104,789. 
