C 7**1 
and others, wha did me the Honour to vifit me. 
Afterwards I met with an Experiment of the fame 
kind, in a Treatife publiflfd by Profeffor Bofe> in- 
titled, Re eh ere hes Jut la caufe et fur la veritable 
iheorie de l' EleElricite, which that ingenious Gentle- 
man fays, had given him great Trouble by its Odd- 
nefs. The Experiment is, that, if the eledrical Ma- 
chine is placed upon Originally-eledrics, the Man 
who rubs the Globes with his Hands, even under 
thefe apparently favourable Circumftances, gives no 
Sign of being eledrified, when touched by an un- 
excited Non-eledric. But if another Berfon, (land- 
ing upon the Floor, does but touch the Globe in 
Motion with the End of one of his Fingers, or any 
other Non-eledric, the Perfon rubbing is inftantly 
electrified, and that very ftrongly. The Solution 
of this Rhanomenon, feemingly contrary to the al- 
ready difeover'd Laws of Eledricity, had terribly 
tormented him $ but however he has given us the 
following, which he modeftly calls a plaufible Sub- 
terfuge rather than a Solution; viz. that a Power 
cannot ad at the fame time with all its Vigour, 
when one Part of it is already employed ; as a 
Horfe, who already r draws an hundred Pounds, 
cannot draw an additional Weight as freely as if 
he had not been loaded at all. That the Hand 
excites the Virtue already in the Sphere 5 therefore 
if the fame Power impregnates the Man, there 
remains none for the Globe. That the Virtue of 
the Globe then cannot be communicated at the 
fame time to the Man, by whom it is created. That 
he, who gives it, cannot receive it himfelf. From 
thefe, and fuch-like Confukrations, it appears to 
him, 
