[ 587 ] 
at A is repelled by E B or all that part of the cone 
beyond is as 
For fuppofing A B to flow, the fluxion of is 
proportional to — ABx AB% and the fluxion of its 

repulflon on A is proportional to ; the fluent 
of which is — ; which when AB is infinite ' 
n — 3 X A B"— 3 
is equal to nothing j confequently the repulflon of 
E B if is proportional to of to 
" Corollary. 
If AB Is infinitely fmall, is infinitely great > 
therefore the repulflon of that part of the cone be- 
tween A and Bb, on A, is infinitely greater than the 
repulflon of all that beyond it. 
L E M M A II. 
By the fame method of reafoning it appears,; that 
if n is equal to 3, the repulflon of the matter be- 
tween B b and D i on a particle at A, is proportional 
A D 
to the logarithm of ^ ; confequently, the repulflon 
of that part is infinitely fmall in refpedl of that be- 
tween A and B b^ and alfo infinitely fmall in refped: 
of that beyond D d. 
4F2 Lemma 
