“5 2 - 
t 21 ] 
CHAP. V. 
Of Crystalization. 
T H E ufual Way of procuring Cry dais 
from any Salt or faline Subdance 
is, to diffolve the fame in warm Water; to 
filter the Mixture if there be any Foiilnefs; 
to evaporate till a Film is feen at Top ; 
and then to fet it in a cool place to fhoot. 
Heat enables the Water to diffolve and hold 
up a greater Quantity of the Salt than it 
would do without it, and Cold afterwards 
greatly a {lifts its forming into Crydals. 
The Crydals thus formed, whether more 
or lefs in Quantity, will always have fuch 
Figure as is peculiar and condant to the 
Kind of Salt they are procured from; and 
how often foever their Particles be fepa- 
rated by Solution, they will come together 
again, and reunite in fuch a Manner as to 
produce Bodies exactly of the fame regu¬ 
lar Forms; which, mud imply, that fuch 
component Particles;, whatever their Shape 
or Texture be, are-themfelves unalterable, 
and that the Principle or Law whereby 
they are brought together is uniform and 
perpetual. Their Concretion may be ac¬ 
counted for on Sir Ifaac Newtons Princi¬ 
ples, by the attractive Force with which 
all Bodies, and Salts more efpecially, by 
reafon of their Solidity, are endued ; where- 
fey, when the Water wherein they float 
