0-0 
[ 7 ^ ] 
51. If a Man (lands upon the Machine placed up- 
on Originally-eledrics, and the Gun -barrel with the 
other Non-eleftrics are fufpended as ufual in Con- 
tact with the Globes, no Eleftricity is obferved in 
that Man: But if a Wire, hanging to the Wainfcot 
of the Room, touches the Gun barrel, or a Man 
ftanding upon the Floor applies his Finger thereto, 
the Man upon the Machine emits Fire copioufly 5 
and either himfelf, or the Man who turns the Wheel 
of the Machine, fires inflammable Subftances. But 
this EfFeft is no longer cbfervable, when the Wire, 
&c. are removed from touching the Gun-barreh 
So that, in this Experiment, the ufual Courfe of the 
Electricity is inverted; and that Power, which, in 
moll other Inftances, is brought by the Wood- work 
of the Machine to the Globes, and by them dif- 
charged upon the Gun-barrel, is now brought by 
the Wire to the Gun-barrel, and from this the 
Globes throw it all over, not only the Machine, 
but any Non-eledtric in Contact with it, if the Elec- 
tricity is flopp'd. In this Experiment, if an iron Rod, 
ftanding upon the Floor, is inclined againft the 
Loops of the (ilk Lines which fupport the Gun* bar- 
rel, in fuch a manner as not to touch the Gun-barrel, 
the eledtrical Fire, which pafies from the iron Rod 
to the Gun barrel, inftead of being fupplied con- 
ftantly, comes in by Flapping fo long as any un- 
excited Non-ele&rie communicates with the Ma- 
chine, but ceafes upon its being removed : And if 
the Air is very dry, and none of the Electricity con- 
duced down the lilk Lines, the Snapping from the 
iron Rod to the Gun-barrel will frequently corre- 
spond to the touching of the wooden Machine with 
your 
