160 Flowers of Benjamin. 
figurations are broken away and deftroyed 
bv the Air. 
* 
Among the Spiculee fhooting from the 
Edges there are many ftrait-lined Figures, 
whofe Ends are not pointed, but flat and 
fpreading ; (fee a a.) Thefe are chiefly ow¬ 
ing to .the Tartar ; and the Permanence of 
the hexagonal Cryftals implies that they con¬ 
tain a large Proportion of the Vitriol. 
N. B. It frequently happens, when a 
Drop of this Solution, heated over the Can¬ 
dle, is placed under the Microfcope, the 
Steams arifing from it fo obfcure the Objedt- 
Glafs, that nothing can be leen through it, 
until the Glafs be cleared with a Piece of 
Wa£h-Leather, or a foft Linen Cloth. 
This is the Cafe likewife in examining 
feveral other Solutions, as has been before 
remarked. 
CHAP. XXXI. 
Flowers of Benjamin. 
"^HE Flowers of Benjamin are Salts 
§ obtained by Sublimation from a Gum 
of the fame Name. Thefe Salts are fo volatile, 
that on putting fome of the Gum grofsly 
powdered into a fubliming Pot, they rife 
with a fmall Degree of Heat into a Cover 
plaqed over them; whence they are wiped 
2 
out 
