'[ 591 1 
undercharged : in like manner, when I call it 
undercharged, 1 mean that it is undercharged in 
all parts, or at lead: no where overcharged. 
PROP. III. 
If all the bodies in the univerfe are faturated with 
eledric fluid, it is plain that no part of the fluid 
can have any tendency to move. 
PROP. IV. 
“ \ 
If the quantity of eledtric fluid in the univerfe is 
exactly fufficient to faturate the matter therein, 
but unequally difperfed, fo that fome bodies are 
overcharged and others undercharged; then, if 
the eledric fluid is not confined, it will immedi- 
ately move till all tlie bodies in the univerfe are 
faturated. 
For, fuppofing that any body is overcharged, and 
the bodies near it are not, a particle at the furface of 
that body will be repelled from it by the redundant 
fluid within ; confequently fome fluid will run out . 
of that body; but if the body is undercharged, a 
particle at its furface will be attracted towards the 
body by the redundant matter within, fo that fome 
fluid will run into the body. 
N. B. In Prob. IV. Cafe III. there will be fliewn 
an exception to this propolition ; there may 
perhaps be fome other exceptions to it : but I 
3 think 
