[ 66 ] 
ceptiblc, folved likewife three Queftions of a fub- 
oidinate Nature. 
Firft, whether or no, cater is paribus , any Differ- 
ence occurred in the Succefs of the Experiment, if 
the long Wire, inttcad of being joined to the Coat- 
ing of the Phial, was fatten d to the fliort iron Rod, 
which upon touching the Gun- barrel occafion’d the 
Explofion ; ai^d if the fhort Wire, which only went 
to the Obfefver at A , a Dittance from the Machine 
not more than 30 Feet, was joined to the Coating 
of the Phial ? Upon Trial no Difference * was 
found. 
Secondly, Whether or no, cateris paribus , any 
Difference in the eledrical Commotion would be 
perceived, when that Power pattes through the Arms 
of two Obfervers, whofe Bodies made Part of the 
Circuit, handing in the Room near the ele&rifying 
Machine 5 one of which takes the Extremity of the 
(Wire that goes to the Obferver at A in one Hand, 
and touches the Gun -barrel with the fhort iron Rod 
held in his other Hand ? The other Obferver takes the 
Extremity of the Wire which goes to B or C in one 
Hand, and touches the Coating of the charged Phial 
with his other. In feveral Trials, where each of thefe 
Obfervers frequently changed Stations, no Difference 
in point of Strength was obferved in the ele&rical 
Commotion. 
Thirdly, 
* No Difference is obferved when the ele&rical Circuit is pro- 
pagated through^ Subftances which readily condua Elearicity j if 
they condua it in a lefs Degree, the elearical Commotion is moft 
perceptible to the Obferver, who holds the Wire, which comes 
from the charged Phial, 
4 
