'Experiments in Electricity. 4^9 
connected with the flying clouds, the oppoiite globe only 
will receive its charge from the prime conductor. But if 
balls inftead of points be made to terminate the con- 
ductors of the houfes, the globes ee will vibrate till both 
be equally charged. 
7. Or if we take off the globes and place a large jar or 
battery to each conductor, and charge them by turning 
the cylinder till the electrometer rifes to ninety degrees, 
the ftrokes of the vibrations of the pole dd become very 
ftrong; then, by means of an infulated rod, I place a 
point on the upper part of either conductor where the 
knob of the pole ftrikes, and no explofion will come on 
that point. But if, inftead of a point, a ball be fo inter- 
pofed, there will be an explofion ; and the larger the ball 
is, the greater the explofion will be. In the latter part of 
this experiment, when the ball is interpofed, if any per- • 
fori applies his finger to any wire on the board www, or 
to the folid pieces of marble ftanding on the board, he 
will be fenfibly affeCted with a fliock every time the ex- 
plofion happens ; but when the knob is in contaCt with 
the point in the former part of the experiment, as there 
is no explofion, neither will his finger be affeCted on the - 
marble or any part of 'the wire. 
V 
8. Another experiment, which feerns to agree in ef- 
fect with all the foregoing, is as follows. - 
From 
