CHINESE TRADE. 447 



f. 



Cinnabar. 



THERE are two forts of cinnabar : one 

 natural, which is found perfedly formed ia 

 the bowels of the earth, aa defcribed in the 

 preceding article; and the other artificial, 

 which confifts of three parts of crude mer- 

 cury, and one of fulphur, mixed and fubli- 

 niated together. The latter pounded a long 

 time on a piece of porphyry, maybe reduced 

 to a very fine powder, called vermilion, 

 which is one of the moft beautiful red co* 

 lours we have. It is ufed for rendering 

 Spanifh wax red. Fine cinnabar ought to 

 be of a bright red colour. 



Borax. 



THIS is a fait, proper for accelerating 

 the fufiOQ of metals. It muft be chofen 



4S 



