'[657] 
overcharged in that part nearefl to A than in the dp- 
pofite part. Moreover, as the near undercharged 
prt of A is fuppofed to attra(fl a particle of fluid in 
With more force than the more diftant overcharged 
part repels it; it muft, a fortiori^ attradl a particle 
in the canal with more force than the other repels it ; 
therefore the body A muft attraft the fluid in the 
^nal ; and confequently fome fluid muff flow from 
B to A, which is impoflible ; for as A and B are 
both eledtrified in the fame degree, they contain the 
fame quantity of fluid as if they both communicated 
with a third body at an infinite diflance, by canals of 
incompreflible fluid j and therefore, by the corollary 
to Prop. 24, if a communication is made between 
them by a canal of incompreflible fluid, the fluid 
would have no difpofition to flow from one to the 
other. 
Case IX. But if one of the bodies as A is pofi- 
tively eledtrified in a lefs degree than B, then it is 
poflible for the bodies to attradt each other; for in 
this cafe the force with which B repels the fluid in 
A may be fo great, as to make the body A either 
intirely undercharged, or at leaft to make the nearefl; 
part of it fo much undercharged, that A fliall on the 
whole attradl a particle of fluid in B. 
It may be worth remarking with regard to this 
cafe, that when two bodies, both eledlrified pofitively 
but unequally, attradl each other, you may by re- 
moving them to a greater diflanee from each other, 
caufe them to repel; for as the flronger eledlrified 
body repels the fluid in the weaker with lefs force 
when removed to a greater diflanee, it will not be 
VoL. LXI. 4P able 
