C 494 ] 
the Coating to the Wire in the Mouth, or other- 
wife directed itfelf both Ways at once ? That the 
EleCtricity muft pafsoffoneof thefe three Ways, was 
certain, as the Explofion would not be complete, 
unlcfs in the Inflant thereof fome Matter very non- 
electric communicated between the Wire in the 
Mouth, and the Coating of the Glafs. Unlefs there- 
fore the Obferver was placed in the Centre of the 
conducting Wires, it might be objected, that the 
Experiment was not made with the ExaCtnefs necef- 
fary ; becaufe any Perfon, who was of Opinion that 
the Electricity directed itfelf from the Mouth of the 
Glafs to the Coating, might objeCt, if the Wire from 
the fhort iron Rod to the Obferver was only half 
the Length of that between the Obferver and the 
Coating of the Glafs, that the EleCtricity, in the Time 
found, palled only through the fhort Wire, and vice 
verfa. But if, as it was here thought proper, the 
Obferver was placed in the Centre of the conduct- 
ing Wire, let the Direction of the EleCtricity be 
what it would, no Difference could happen in the 
Refult of the Experiments, if made with the nccef- 
fary Caution $ becaufe, if the EffeCts in the middle 
and both Ends of the Wires were inftantaneous, the 
Conclufion therefrom would be very obvious. To 
make the Experiment, the fame Phial filled with 
Filings of Iron, and coated with Sheet-Lead, which 
was ufed laft Year, was placed in the Window of 
the Room near the Machine, and was connected to 
the prime Conductor by a Piece of Wire. To the 
Coating of this Phial a Wire was faltened ; which, 
being conducted upon dry Sticks to the before-men- 
tioned Field, was carried in like manner to the Bot- 
tom y 
