834 Mr - nairne’s Experiments to Jhew the 
the artificial cloud, it ftruck to the ball d, as in the firft 
experiment, viz. feventeen inches four tenths. Now as 
the wire was fo fmall which conducted the ftroke, I 
thought I might be fenfible of its paflage if I held the 
wire between my fingers ; I accordingly prefied my fin- 
gers together, with the wire between, but there was not 
the leaft fenfation; nor fhould I have known it had 
palled my fingers if I had not feen or heard the ftroke 
from the artificial cloud to the ball with which the wire 
was connected. I then tried if it was vifible in the dark, 
but there was not the leaft appearance of light, except 
where there happened to be kenks in the wire. I was 
accidentally very fenfible of one of thofe Iparks: for 
when I was trying .the experiment in the dark, I hap- 
pened to get fo near as to receive the ftroke juft on my 
forehead; it made me reel till I fell againft the wall. It 
may be proper to obferve in this experiment, that if the 
fingers are held at a little diftance from the wire, that a 
fmall quantity of eledlric fire will ftrike out to them the 
fame as it does when conducted off by a larger quantity 
of metal. 
o b s e R- 
