222 Elements of Mineralogy. 



Copal. 



Mr. Lehman and many others rank this 

 alfo among minerals; but Mr. Bloch, in a 

 ftill later diflertation, has fatisfadorily proved 

 that it belongs to the vegetable kingdom. 2 

 Befchaft. BerL Gejellfch. p. 91. 



SPECIES XIV. 

 Sulphur, Brlmftone. 



Sulphur is a taftelefs, hard, brittle, idio- 

 eleftric fubftance, of a yellow or greenifh 

 yellow colour, whofe fpeciiic gravity is from 

 1,9 to 2,35. According to Mr. Bergman it 

 gently evaporates at 170, melts at 185, and 

 flames at 302 of Fahrenheit. 3 Bergm. 242. 

 It burns with a blue flame, and a difagreeable 

 fuffocating fmell ; in clofe veflels it fublimes 

 without decompofition, or only a decompofi- 

 tion proportionable to the quantity of air they 

 contain ; when melted it becomes red, but 

 recovers its colour on cooling. 



It is infoluble in water, though by long 

 trituration it is faid water will take up fome 

 of it, but I believe it is rather diffufed thro* 

 than diflblved in it ; neither can fpirit of 

 wine unite to it, except when both are in a 

 vaporous ftate, and then 72 parts of fpirit of 



wine 



