Thoughts on Configurations and Cryfitals. 3 9 
commonly, to combine in fuch Cryftals 
as are peculiar to the SubjeCt; the Side's 
and Angles of which Crydals formed with¬ 
in the furrounding Fluid are regular, pc- 
liihed, and transparent: and their oppo- 
fite Sides would be the fame alfo, were 
they not terminated by the Edges of the 
Drop,, and unable to form themfelves upon 
the dry Glafs. 
This ufually is the Beginning of the 
Procefs 5 and thus far the Power of Attrac¬ 
tion feems alrnoft wholly to prevail: a 
Power whereto Cryftalization appears al¬ 
moft intirely owing; Repuliion, on the 
contrary, may be deemed the firft Agent 
in producing Configurations: or to fpeak 
more plainly. Attraction, by making all the 
Particles within a certain Circumference 
move towards fome certain Points, and 
combine together in a regular Order, pro¬ 
duces Cryftals; Repulfion, bypufhing them 
outwards from fome certain Points, in a re¬ 
gular Order, occafions Configurations, when 
they are brought together again by Fits of 
Attraction. 
Should it be objected, that our Configu¬ 
rations may alfo be produced by Attrac¬ 
tion only, I muft prefume to think that is 
fcarcely pofiible ; for the Shoots that firft 
appear do not only pufh forwards vigoroufly 
in the Procefs, but divide and fubdivide into 
innumerable Lines and Branches; which 
D 4 Divifion 
