[ 7 3 8 ] 
condad this AEther faft enough to keep the Sil- 
ver fufpended. It may be imagined, that it is 
pollible for the Silver to be fufpended, without fup- 
pofing a Flux of the electrical ^Ether from the 
neareft unexcited Non-electric, as well as from the 
excited one j that is, by the fimple electrical Attrac- 
tion. But to obviate this, it mu ft be remembered, 
that the electrified Gun-barrel both attracts and re- 
pels light Subftances at the fame time. Can this 
Attraction and Repulfion be conceived without the 
Operation of the electrical ^Ether both to and from 
the Gun-barrel at the fame time ? Does not this 
point out an Afflux as well as an Efflux ? Are not 
the electrical Repulfions as ftrong at lead as the At- 
tractions? Do not we fee light Bodies, either be- 
tween excited Originally-electrics, or excited Non- 
electrics, and unexcited Non-electrics, dart like a 
Ball between two Rackets of equal Force ? It may be 
faid perhaps, 
1. That the fufpended Silver may l only ferve as 
a Canal of Communication, which difcharges the 
Electricity from the excited Non-electric to the un- 
excited one 5 and that when an Originally-electric is 
placed between the lower Plate in this Experiment 
and the Floor of the Room, that then the Silver is 
attracted only, until the lower Plate is farurated 
with Electricity, and no longer. This is as much as 
faying that this Effect arifes from Electricity, with- 
out mentioning in what manner. 
2. That this Effect is produced by the electrieal 
Attraction, which gives the Silver a Direction to- 
wards the excited Non electric, but that it is kept 
down near the unexcited one by the Force of Gra- 
vity. 
