■ [ . 737 '] 
ment, by cledrifying the bottom Plate, and fufpend- 
ing the other over it. Now I conceive, that the 
Space occupied by this Leaf of Silver, is that where 
the (lyEquilibrium of the eledrical ./Ether is re~ 
ftored 5 for if you take away the under Plate, thro" 
which from the Floor the Flux of this ./Ether is 
furnifhed, or if that Plate be placed upon an Elec- 
tric per Je ? by which this Flux is prevented likewife* 
the filver Leaf is blown away. 
59. No Body can be fufpended in (^yEquilibrio 
but from the joint Action of two different Direc- 
tions of Power : So here, the Biaft of eledrical 
./Ether from the excited Plate blows the Silver to- 
wards the Plate unexcited. This laft, in its Turn, 
by the Biaft of eledrical ^Ether from the Floor Pet- 
ting through it, drives the Silver towards the Plate 
eledrified. We find from hence likewife, that the 
Draught of eledrical ^Ether from the Floor, is al- 
ways in proportion to the Quantity thrown by the 
Globes over the Gun-barrel 3 or the Equilibrium 
by which the Silver is fufpended, could not be main- 
tained. I once found, that a Gentleman, at that 
time an Invalid, whofe Shoes were perfectly dry, 
and of eonfequence Originally-eledrics, and who 
was employ'd to hold the Non-eledric Plate through 
which the ./Ether was to come from the Floor / this 
Gentleman, I fay, did not furnifh a fufficient Quan- 
tity, becaufe of the Drynefs of his Shoes, to main- 
tain the o /Equilibrium* and the Silver was blown 
away. But upon employing another to this Office, 
whofe Shoes were more wet, the iEther came rea- 
dily through him, and the Silver was fufpended. I 
have likewife found a wooden Pole, very dry, not 
C c c c c 2 condud 
