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was attraded by the oppofite Side of the Receiver : 
If the Hand was held near the Receiver, and moved 
haftily from it, the Thread was attracted by theoppo- 
lite Side, as before. This feemed at firft difficult to ac- 
count for ; but upon farther Confideration, we con- 
cluded it proceeded from the Motion of theAir made by 
the Tube, and in the other Cafe by that of the Hand, 
which took off the Attradion from that Side, and 
not on the other Side j fo that, as Mr. Wheler very 
well exprelfed it, by this Means the Balance of the 
Attraction was taken off. 
We made another Experiment by fufpending 
a Thread on the Top of a fmall Receiver, and 
whelming a large one over it * then by firft rubbing 
this, and holding therubbM Tube near it, the Thread 
in the middle Receiver was attracted to that Side of 
it where the Tube was held. 
An Experiment , pewtng that Attradion is 
communicated through opacous as well as trans- 
parent Bodies , not in vacuo. 
There was taken a large Hand-Bell, the Clapper be- 
ing firft taken our, and a Cork fufpended by a Thread 
from the Top of the Bell, the Cork being fmeared over 
with Honey : Then the Bell was fet on a Piece of 
Coach-Glafs, which had been well rubbed, on which 
the Leaf-Brafs was hid ^ then the Tube being rub- 
bed, and held near the Handle of the Bell, and af- 
terwards near the Top and Side of the fame, the Bell 
being taken off, there were feveral Pieces of the 
Leaf-Brafs flicking to the honey’d Cork that had 
been attradedby it : It appeared alfo that fome others 
