I 77 2 



VITRIOLATED ZINC. 



ginc combined with vitriolic Acid, 



Synonymous Names. 

 ■White vitriol 



VITRIOLATED ■< 

 ZINC. 



pvvnite vitr 

 J White cop] 

 I Sal vitrioli 



copperas* 

 doli. 

 Vitriol of zinc. 

 GoOard vitriol. 

 .Sulphate of Zinc. 



This is fometimes found in waters near the 

 mines of zinc ; it has a ftyptic tafte ; its chryf- 

 tals are colourlefs, and generally tetrahedral 

 prifms, terminating in pyramids. 



a. By adding lime water pearl coloured clouds 

 will appear, and a precipitate of this kind will 

 fall to the bottom. 



b. Vegetable alkali, mild or cauilic, being 

 added, a precipitate will appear of a dirty yel- 

 lowifh pearl colour. 



c. Upon adding cauftic volatile alkali, a pale 

 orange coloured preciptate will be formed. 



d. But if the volatile alkali be employed in 

 its mild ftate, a precipitate, nearly of a white co- 

 lour will be formed. Thefe feveral fubflances 

 unite with the vitriolic acid, and remain diffolved 

 in the water, whilft the zinc is precipitated in the 

 form of a calx, 



3 e. Upon 



