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Bridge ; . w#. that Portland Stone (landing in 
Water will conduct Electricity very confiderably. 
The Gentlemen then tried what would be the 
Effect, if the Obferver at B flood upon a Cake of 
Wax holding the Wire as before, and touched the 
Ground of the Meadow with his iron Rod at leaft 
iyo Feet from the Water; and if the Obferver 
u fu ally placed near the River at A, had his Wire 
carried 150 Feet over the River as the former, flood 
upon an Originally -Electric, and touched the Ground 
with his iron Rod. Upon the Explofion of the 
charged Phial, which was feveral times done, both 
the Obfervers were fmartly (truck : This demon- 
ftrated, that in thefe Inftances the moift Ground of 
the Meadows made Part of the Circuit. The Ob- 
fervers were diftant from each other about 500 Feet. 
% The Obfervers then, ftation’d as in the laft Expe- 
riment, flood upon the wax Cakes as before, with- 
out touching the Ground with the iron Rods, or 
any Part of their Bodies, and the charged Phial 
was exploded four times. Thefe were not at all 
felt by the Obferver next to B , and without the 
greateft Attention would not have been perceived 
by him next to A-> and then only in fome of the 
Trials, the Feeling of the Electricity was like that 
of a fmall Pulfe between the Finger and Thumb of 
that Fland which held the Wire. The loaded Phial 
was again difeharged four times more, without any 
other Alteration in the Difpofition of the Appara- 
tus than that the Obferver next to B flood upon 
the Ground } when the electrical Commotion was 
perceived by that Obferver, though not fo (harp as 
when the other Obferver at the fame time flood 
upon 
