94 'Difiilled Verdigreafe . 
being digeffed with difiilled Vinegar iM 
a eoniiderable Degree of Heat, and dif- 
folving partly therein, affords a Liquor of a 
irioft beautiful green Colour, which after 
Evaporation, being fet in a cold Place) pro¬ 
duces tranfparent and elegant,green Cryffals, 
that are called ufually by the Name of 
D filled Verdigreafe , but are really a Vitriol 
loaded with the pure ft Particles of the 
Copper. 
If thefe Cryffals are diffolved in w r arm 
Water, and a Drop of it be applied to the 
Microfcope immediately, it ufually produces 
Abundance of the regular Figures i, 2, 3, 4, 
5, 6, 7, (exhibited at the Side of the fourth 
Drawing, Plate II.) without forming any 
eoniiderable Configuration: but if the 
Solution is Differed to ftand quiet for a 
few Hours, and a Drop of it be heated over 
the Fire on a Slip of Glafs, till it begins to 
concrete about the Sides, and then examined, 
iharp-pointed folid Figures (bifedled by a 
Line through the Middle, from which they 
are cut away towards the Edges) will be feen, 
ihooting forwards, as reprefented 1, 1, 1 : 
which Figures are oftentimes ftriated very 
prettily from the Middle Line to the Edges, 
obliquely, as 2, 2, may ferve to thew. They 
both arife frequently in Clutters, and /hoot¬ 
ing from a Center, as at 3, 3. 
The forementioned Figures are a long 
while growing j and whi.llt they are doing 
fo. 
