I 3 
would never continue going two Hours together. 
As it had always kept going with great Freedom,, 
before the other Clock (which I call No 2.) was 
placed near it, this led me to conceive its flopping 
muft be owing to fome Influence the Motion of one. 
of the Pendulums had upon the other ; and upon 
watching them more narrowly, I found the Motion 
of N® 2. to increafe as N® i. diminifhed ; and at 
the time N® i. flopped, N® 2. deferibed an Arch of 
that is nearly two Degrees more than it would 
have done,, if the other had not been near it, and 
more than it did move in a fhort time after the other 
Pendulum came to be at Reft : This made me ima- 
gine that they had a mutual Influence upon each 
other. Upon this I flopped the Pendulum of N° 2. 
leaving it quite at Reft, and fet N° i . a going, the 
Pendulum deferibing as large an Arch as the Cafe 
would permit, vJz. about 50^ In about 20 Minutes 
after, I went to obferve whether there was any Mo^- 
tion communicated to the Pendulum N° 2. when, to 
my Surprize, I found the Clock going, and the Pen- 
dulum to deferibe an Arch of 3°, whereas at the 
lame timeN® i. did not move 40. In about half an 
Hour after, N° i. flopped, and the Motion of N® 2. 
was increafed to very near 5®. I then flopped N® 2. 
a fecond time, and fet N° i. a going, as before ,• and 
handing to obferve them, I prefently found the Pen- 
dulum of No 2. to begin to move, and the Motion 
to increafe gradually, till in 17' 40" it deferibed an 
Arch of 20 10', at which time the Wheel difeharg- 
ing itfelf of the Pallets, the Clock went. The Arches 
ofthe Vibrations continued to increafe, till (as in the 
former Experiment) the Pendulum moved y° 3 the 
Motion 
