C 33 ] 
Time between feeling the electrical Commotion, 
and hearing the Report of the Gun, with the utmoft 
Attention and Exa&nefs; the Time, I fay, between 
feeling the eleCtrical Commotion, and hearing the 
Report of the Gun, was, at a Medium , 5 Seconds 
and a Quarter, or f ' 1 Tooo> And as the Gun was 
diftant from thefe Obfetvers 6732 Feet, it follows, 
from the Experiments, which have been made on 
the Velocity of Sound, that the real [Inftant of the 
Difcharge ot the Gun preceded that of the Obfcrvers 
hearing its Report, at this time when the Strength 
of the Wind was not fo great as to enter into the 
Computation, or preceded the Inftant when 
the eledrical Commotion was felt only o". 
But this Inftant was, from the Nature of the Expe- 
riment, neceflarily prior to that of the electri- 
cal Explofton, which was not made till the Fire 
of the Gun was actually feen j and therefore the 
Time between the making of that Explofton, and 
its being actually felt by the Obferver, which muft 
have been lefs than o was really fo fmall, as 
not to fall under any certain Obfervation, when it 
is to be diftinguifhed from that, which muft of Ne~ 
ceftity be loft, between the Firing of the Gun, and 
the eleCtrical Explofton itfelf. 
In all the Experiments, where the Circuit was 
formed to any confiderable Length, though the 
coated Phial was very well charged, the Snap at the 
Gun-barrel, upon the Explofton, was not near foloud 
as when the Circuit is formed in a Room 5 fo that 
a By-ftander, though verfed in thefe Operations, 
from feeing the Flafh, and hearing the Report, 
would imagine the Stroke at the Ends of the con- 
ducting Wire to be very flight ; the contrary whereof, 
L 2 when 
