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ticcd : and the Afphaltus, or Jews Pitch. 

 Jet has a Grain like Wood, is very light, 

 moderately hard, not fufible, but readily 

 inflammable, aud burning a long Time 

 with a greeniih white Flame. It is found 

 in detached MafTes. Cannel Coal is found 

 in Strata^ is not lefs hard than many 

 Stones, is inflammable, yet flames but a 

 little while j in all thefe particulars differ- 

 ing from Jet, with which it has often 

 been confounded. 



Sulphurs, or Brimftones, an un6tious 

 Subftance, of various Colours, according 

 to its Purity ; when moft fo, it is eafily 

 inflammable and fuflble in Fire, and cafts 

 a flrong fuflbcating Smell •, it is dry, folid, 

 and friable, is indued with an ele6lric 

 Power, and does not diflTolve in acids : It 

 is very frequently mixed v/ith Arfenic , 

 and fometimes with metalline Particles, 

 when it is called Marcqfite and Pyrites. 

 The Pyrites Aureus is frequently met with 

 in great plenty near Banbury in Oxford- 

 Jliire \ but a finer Sort is found at Cleydon 

 E 4 a 



