Sq C finclure from Copper how drjjujible* 
« veiled or-their Colour, and rendered co- 
“ lourlefs and pellucid like Water by Acids, 
“ if the Proportions be carefully regarded. 
« The blue Liquor here is made colourlefs , 
“ as the colourlefs Liquor was before made 
“ Blue ; and the pellucid Liquor thus pro- 
“ duced, will exhibit all the Phsenomena 
“ before defcribed in that originally colour- 
<s lefs. To this it may be added, that even 
the ftrong blue and green Solutions are ea- 
tc fily changed from Blue to Green, and from. 
Green to Blue in the fame Manner 
And how far Copper can diffufe its 
Tindture (or its Parts become divifible) 
may be learned from Mr. Boyle , who found 
a fingle Grain of Copper, diffolved in Spirit 
of Sal Ammoniac, would make 256806 
times its own Bulk of clear Water of a blue 
Colour ; would give a manifeft Tindture to 
above 3S520Q5 and a faint, yet diftinguifh-* 
able one, to more than 530620 times its own 
Bulk -f*. 
CHAP. XII. 
Green Vitriol, or EngHJh Copperas. 
O U R Green Vitriol contains a great 
deal of Iron, but appears not tq hold 
any Copper, which makes its Colour diffi- 
* Hill’s Theophraftus, page 188, 189. 
f Vide Bojle Abridged, VoL 1 . page 408. 
cult 
