22 Of Cryjlalization, 
Is evaporated to fuch a Degree that the 
faline Particles come within the Reach of 
each other’s attractive Power, and do ac¬ 
tually attract one another more vigoroufly 
than the Fluid attracts them, they fofm 
themfelves into Cryftals. And-as to the 
Regularity of their Figures, “ that argues 
(according to the fame great Man) that 
se the Particles of the Salt before they con- 
€S creted, floated in the Liquor at equal 
** Difiances in Rank and File* and by 
se confequence that they adted upon one 
es another by fome Power which at equa 
Diftances is equal, at unequal Diftan* 
ces unequal. For by fuch a Power they 
ee will range themfelves uniformly, and 
te without it they float irregularly, and 
come together as irregularly.” He alfo 
fuppofes, that the Particles not only 
range themfelves in Rank and File for 
concreting in regular Figures, but alfo by 
fome kind of polar Virtue turn their ho- 
te mogeneal Sides the ‘fappe Way 
As that Conftancymfi Figure, obfervable 
in the Production of Cryftals from the 
fame Salt, proves their component Particles 
to have fome determined and unalterable 
Shape, fo the Difference of Figure pecu¬ 
liar to the Cryflals of different Salts, in¬ 
duces one to believe, that the component 
Particles of each Kind differ no lefs in 
* Newton's Opticks, 2d Edit. Page 363. 
Shape 
