go ■ White Vitriol .. 
Methods, after trying feveral Times to make 
it co io without Succefs, I have contented 
myfelf with examining the * Gilla or Sal 
Vitrioli made by the Chemifts: two Figures 
whereof, A B, as magnified above a thou fan d 
times in the Area, are given at the Side 
of the Drop. They appear to be qua¬ 
drilateral Columns, the Inclination of whofe 
Sides is oblique, having generally a qua¬ 
drilateral Pyramid at each End, formed of 
triangular Sides correfponding to thofe of 
the Column, as at A , but fometim'es thefe 
triangular Planes interfedt, in fuch a Man¬ 
ner that the Angle at the Apex is com¬ 
prehended under only three of them, as 
at: B. 
Vitriol in confiderable Abundance is found 
in -Subflan.ee and of different Colours, 
blue, green, white, and red, in feveral 
Parts of Hungary, Germany, and other 
Countries : but very little, if any, native 
Vitriol is ever found in Mafies or Lumps 
in England; all produced here being ob¬ 
tained by Art from the Fyritre, and of the 
white the greateft Part comes to us from 
Abroad. The Appearance of fuch White 
Vitriol is extremely like Loaf Sugar ; it has a 
fweetifh difagreeable fliptic Tafte, and when 
* Thefe Saks or Cryftals are obtained by the Help of 
Spirit of Vitriol, or, as Lemery diretils, by diffolving White 
Vitriol in the Phlegm of Vitriol. 
diffolved 
