[ 392 ] 
and, when the drops began to fall, the iourth 
turn feparated the balls ; and the tenth caufed 
them to diverge to the difta.nce of half an inch j 
and in this flate of repulfion they continued a 
confiderable time, after 1 had ceafed to work the 
machine. I then took off the electricity with 
my finger, and again cleared the veffel of its 
water, &c. and, having replaced it with the point 
as before, I worked the machine again as ufual. 
The air was now grown in fome meafure elec- 
trical ; for, at the feventh or eighth turn, the balls 
began to feparate, and in forty turns they were 
about three eighths of an inch diflant from each 
other. I then ceafed to turn the winch any longer ; 
but had no fooner flopped, than the balls began to 
clofe, and in a very few feconds they were in con- 
tad; whereas, in the former experiment (when the 
eleCtrified drops were in the difh), on my ceafing 
to turn the globe, they fhewed no iign at all of 
converging ; and, I imagine, would have remained 
feparate a long time, if I had not taken off their 
eledricity with my finger. 1 apprehend, there- 
fore, from this experiment, that the vapour of hot 
water is a conductor of elettricity. 
EXPERIMENT III. 
I hung on a firing, as near to the cieling of the 
room as I could, a pair of pith-balls, which, on 
working the machine a confiderable time, di- 
verged three quarters of an inch, but no wider. 
Then flicking into the conductor a fmoking deal- 
matchy and working the machine again, they 
prefently 
