( i? ) 
the excited Tube, being applied firft to the Knob of 
the Poker, and after it the Hand, there was the Snap 
and Pricking felt, as I expe&ed ; and the Effedft was 
the fame, when the Tube was firft applied to the 
other End of the Poker. I had by me a three prong- 
ed Iron Inftrumenr, which was made many Years ago ; 
its Ufe was defigned for propping up the Obfervato- 
ry Table, when I obferved the Spots in the Sun ; the 
Prongs were about half an Inch Diameter, two of them 
about xz Inches, and the third about 8 Inches long ; 
they were tapering towards the Ends, and pointed : 
this being laid either upon Cylinders of Glafs, Cakes 
ofRofinand BeesWax, or on a Cake of Sulphur, the 
Tube being applied to the End of any of the Legs, the 
Hand or Cheek being applied near the other, both the 
other Legs had the fame Effeft as that to which the 
Tube had been applied ; but by holding my Cheek 
near any of the Points of the Legs, the pricking or 
burning Pain was much more fenfibly felt, and was 
fometimes felt forfeveral Minutes after. I was not fo 
inquifitive at that Time about making the Experiment 
in the Dark, that I might lee the Light proceeding 
from the Iron, not thinking the Electricity commu- 
nicated to the Metals would have produced fo furpri- 
fing Phenomena, as by the following Account of the 
Experiments will be deferibed. 
1 . 1 come now to give fome Account cf the Experi- 
ments we made at Mr. Wbeler’ s, beginning firft 
with the Succefs we had in repeating Mr. Dufay's 
Experiment. Mr. Wheler , foon after my coming to 
him, procured fiik Lines ftrong enough to bear the 
Weight of his Footboy, a good ftout Lad ; then hav- 
ing fufpended him upon the Lines, the Tube being 
applied 
