Solutions of Salts 
37 
The Salts whole Configurations or Cry- 
flals may be thus kept, are common Salt of 
fome Kinds, not of all: ‘ Alum , fome of 
the Vitriols , Saccbarum Saturm, Ens Veneris , 
Salt of Amber , and fome others, which 
are eafily known by their not breaking or 
diffolving away foon after they are pro¬ 
duced. 
CHAP. VII. 
A general Explanation of the Plates, with 
fome farther thoughts on the Cryfials and 
Configurations of Salts . 
H AVING declared already what I 
mean by Configurations, and given 
a full Account how to prepare faline Sub- 
fiances for that Purpofe, and to make a 
proper Colledtion of them, little more is 
requifite at prefent than to explain briefly 
what the following Plates defign. 
Each Figure reprefents a Drop of the 
Solution of that Subftance whofe Name it 
bears ; and is calculated to fhew the Procefs 
of its Appearances, from the firfl beginning 
to cryflalize about the Edges, to the full 
and compleat Conclufion of all its feveral 
Changes. 
As Heat excites Addon, and fets the faline 
Particles in Motion, thofe Particles, whilfl 
float 
