[ 45 6 1 
to ill aft rate the ufe of the eledrometer, I hope they 
will not be unacceptable. 
Experiment I. 
I [» f i 
. n |f « i i 3' • 1 * 1 ■ * ^ 
A piece of moift tobacco-pipe clay, rolled cylin- 
drically , a. fig. 2. about an inch in length, and about 
2 or X of an inch in diameter, having a piece of 
wire thru ft into each end, b b , diitant about of 
an inch from each other, with the folid clay between, 
and the end of one of the wires, c c , fixed to the 
loop of the machine E, and the other fixed to the 
final 1 ferevv of the eledrometer H, will, with an 
explofion at 20 of the eledrometer, be inflated as 
in fig. 3. or if the clay is too dry, or the quantity 
of eledricity too great, it will burft in pieces, leav- 
ing only the clay concave near the ends of the 
wires ; and though the experiment will in appearance 
differ, yet it will always leave evident figns of an ex- 
plofive power, or fudden rarefadion, excepting when 
the wires in the clay are at too great a diftaftce from 
each other; then the eledric fluid will only run over 
its moift furface. If, inftead of clay, a mucilaginous 
vegetable pafte is ufed, as wheat-flower and water, 
6cc. the experiment will appear the lame. 
Experiment II. 
Take a piece of common tobacco-pipe hard- 
baked, as ufed for finoaking, about an inch ip length ; 
fill the bore with clay, and put wires into each 
end, as in fig. 2. which applied in the lame 
manner to the machine, will bui lt into many pieces, 
at 
