* 7^ Salt of Tobacco* 
gons, fome of the Figures at c c in the But* 
cbers Broom, a Sort of Shuttle-like Forms* 
and feveral irregular Bodies j all of which will 
be beft conceived by a View of them at c. 
A fmall Degree of Heat given to the Drop 
produces more of the Configurations, a great¬ 
er Heat more of the Cryftals, many of which 
are at frit triangular, but foon lofe that 
Shape : and indeed the whole is very fpee- 
dily deflroyed by the Air.—-This and the 
Subjedt immediately preceding exhibit no 
Cryftals of marine or common Salt. 
CHAP. XLIII. 
Salt of Tobacco. 
I F a moderate Degree of Heat be given to 
a Solution of this Salt, its firft Shootings 
will be from the Edges of the Drop, in len¬ 
der tapering Figures ending with very fharp 
Points, but at confiderable Diilances from 
one another, and confequently not extremely 
numerous : along with thefe are likewife 
formed other Figures nearly of the fame 
Kind, but intirely detached and farther with¬ 
in the Drop, and contrary to the former, in 
the Circumfiance of having their thicker 
Ends towards the Center of the Drop, and 
the {harper pointing towards its Edge. 
They are complea't Figures, and referable 
Needles, or rather that Sort of Nail called a 
Brad, 
