I 
76 Blue Vitriol . 
The Configurations and Crylfals of Vi¬ 
triol vary according to its different Kinds : 
and its Difference in Kind is fuppofed owing 
to different Admixtures of the fame, or dif¬ 
ferent metallic Matter, with that acid Salt 
(or Spirit) which is the Bafis of all Kinds of 
Vitriol. Thus, when Copper is diffolved 
by and incorporated therewith, the Vitriol 
produced is blue ; when Iron is the Metal, 
the Vitriol is green; and Lead, Tin, or 
Lapis Calaminaris mixed with Iron is ima¬ 
gined to render the Vitriol white. There is 
Kill farther Variety-; but Iron appears to 
be a conKant and principal Ingredient in 
the green and white, as Copper is in the 
blue. 
What occurred in the Examination of 
each comes next to be defcribed. 
CHAP. XI 9 
Blue Vitriol. 
A LL Vitriol of this Colour is fuppofed 
£% to receive its Teint from Copper; 
the beK is produced in Hungary and the 
I (land of Cyprus . 
A Drop of the Solution, heated a little, 
and examined as before mentioned, pro¬ 
duces CryKals round the Edges, very fhort 
