( 173 ) 
CHAP. XLI. 
Salt of ButcherVBroom. 
' - * mm 
N giving a fmall Degree of Heat to a 
Solution of this Salt, Figures will be 
produced from the Edges of the Drop, at 
pretty large Diflances from one another* 
running on in a ftrait DireCtion, and be¬ 
coming gradually larger and more clubbed 
at the End towards the Center of the Drop, 
but terminating in fharp Points at the End 
that is next the Edge: which is a Singu¬ 
larity peculiar to this Salt.—Thefe Figures 
are curioufly jagged or indented on every 
Side from End to End, r cid. Plate VIII. b b* 
Some few however among# them fhoot out 
from their Sides others of the fame Kind* 
and thefe again other ftill fmaller ones $ but 
both in the primary and fecondary Branch¬ 
ings the Shoots appear always on the fame 
Side, as the two Configurations d d may 
ferve to fliew. 
In the Middle Part of the Drop, and 
wherever there are Vacancies, two Sorts of 
regular Cryftals are formed, differing each 
from other both in Size and Shape. The 
larger Kind are folid, and feem to be Tetra- 
hedra having their uppermofl Angle and the 
Edges cut off, and of thefe fome are recti¬ 
linear and others curvilinear. Their Pro¬ 
duction 
