t 6 5 3 
Commotions were perceptible from A to C» a Di- 
jftance not lefs than 2800 Feet by Land, and near 
8000 by Water. 
To execute this, to the former Wire, which was 
already conduced to B> another was added, which 
there crofted the River without touching the W ater ; 
and reached almoft to C, where the firft of a Line of 
Gentlemen held as before the Wire m one Hand, 
and the laft dipp’d the Iron into the Water. The 
W ire from the Machine to A was as before. Upon 
the Signal's being given, the charged Phial was ex- 
ploded ten times, and its Effects plainly though but 
faintly perceived each time by fome or other of the 
Obfervers, but never by them all. The electrical 
Commotion was always felt by that Obferver, who 
held the Extremity of the Wire, but never by him 
who held the iron Rod in the Water. It was in 
one Experiment felt by the Obferver who held the 
Wire, not felt by the next who held the Hand of 
the former, and yet plainly perceived by the third 
who joined the fecond. Thofe who did not them- 
felves feel the electrical Commotion here, did as at 
B fee the involuntary Motions of thofe who did. 
The Obfervers at A felt the Shocks in the fame 
Degree, whether the other Obfervers were Ration’d 
at B or C. 
This Experiment further demonftrates the Diftance 
to which the electrical Power may be conveyed: 
but the fame Difficulty occurs here as in the laft ; 
to wit, whether the Circuit was compleated by the 
Ground, or by the Water of the River? 
Thefe fame Operations, which fhewed at how 
great a Diftance the electrical Commotion was per- 
I ceptible, 
