Advantage of elevated pointed Conductors. 8 2 9 
on charging the artificial cloud, the hall with the point 
being firft placed nearly in contadf with the hall c, it was 
then gradually removed; but not at any diftance would 
it ftrike to the ball, or the point projecting out of it. The 
point was luminous at the diftance of thirty inches. 
EXPERIMENT VI. 
Every thing remained the fame as in the laft experi- 
ment, except only that I now prefied in the point, till it. 
was even with the furface of the four inch ball: on 
charging the artificial cloud, the electric fire did now 
\ 
ftrike to the ball at any diftance, from being nearly in 
contadt, all the while it was very gradually removed to 
as far as feventeen inches and a quarter, though before 
in the laft experiment, where the point projected from 
the ball only one tenth of an inch, it would not ftrike at; 
any diftance. 
EXPERIMENT VII. 
The apparatus remaining as in the laft experiment, I 
took a ball of three inches and a half in diameter, which 
had a fmall hole through it, and fcrewed it to a hollow 
brafs Item. Then I put into this hole one end of a wire,, 
and the other end, which was pointed, projected one inch 
beyond 
