[ 632 ] 
quantity of redundant fluid equal to B, fpread uni- i 
formly over A B, would* repel it, or it mufl; be 
■ B 
equal to that with which a quantity equal to — , 
fpread in the manner in which the redundant fluid 
is aiflually fpread in A B, would repel it. By the 
fuppofition, the force with which AB repels the 
fluid in E M, is to the force with which it would 
repel the fluid in C M, fuppofing E M to be con- 
tinued to C, as 1 — P to one j but the force with 
which any quantity of fluid in AB would repel the 
fluid in CM, is the fame with which an equal quan- 
tity flmilarly difpofed in DF, would repel the fluid 
in EMj therefore, the force with which the re- 
dundant fluid in AB repels the fluid in EM, is to 
that with which an equal quantity flmilarly difpofed 
in D F, would repel it, as i — P to one : therefore, 
if the redundant fluid in AB be called A, the defi- 
cient fluid in DF mufl; be A X i — P: for the farnc 
reafon, the force with which DF attrafts the fluid 
in CG, is to that with which AB repels it, as 
A X I — P X I — P, or A X I — P", to A ; there- 
fore, the excefs of the force with which A B repels 
CG above that with which DF attradls it, is equal 
to that with which a quantity of redundant fluid 
equal to A — A X i — P', or A x 2 P — P% fpread 
over AB, in the manner in which the redundant 
fluid therein is adually fpread, would repel it : there- 
fore, A X 2 P — P* muft be equal to 2, or A mull 
be equal to 
C 0 R o L. 
