[ 3°2 3 
intire, having made no addition to, or diminution 
from, it. 
Rri?ig the excited tube under the tuft of threndsy und 
they will clofe a little* 
They clofe, becaufe the atmofphere of the glafs 
tube repels their atmofpheres, and drives part of them 
back on the prime conductor. 
Withdraw a7id they will diverge as much. 
For the portion of atmofphere, which they had 
loft, returns to them again. 
Experiment II. 
Excite the glafs tube^ and approach the prime con- 
diiBor with ity holding it acrofs near the oppofte 
endy to that on which the threads ha?igy at the di- 
fiance of 5 or 6 inches. Keep it there a few fe- 
condsy and the threads of the tajjels will diverge. 
Withdraw ity and they will clofe. 
They diverge, becaufe they have received eleftric 
atmofpheres from the eledlric matter before con- 
tained in the fubftance of the prime condudlor j but 
which is now repelled and driven away, by the atmof- 
phere of the glafs tube, from the parts of the prime 
conductor, oppofite and neareft to that atmofphere, 
and forced out upon the furface of the prime con- 
du(ftor at its other end, and upon the threads hang- 
ing thereto. Were it any part of the atmofphere of 
the glafs tube, that flowed over and along the prime 
condudtor to the threads, and gave them atmofpheres 
(as in the cafe when a fpark is given to the prime 
conductor, from the glafs tube), fuch part of the 
tube’s 
