'840 Mr. nairne’s Experiments to Jhew the ( 
EXPERIMENT XVI. 
The moveable artificial cloud continuing to ftrike to 
the ball as in the laft experiment, I now replaced the 
ftand with the pointed wire on it, then immediately the 
point became luminous, and the moveable artificial cloud 
ceafed ftriking to the ball, and foon returned to its hori- 
zontal polition as at firft (fee fig. 3.). 
EXPERIMENT XVII. 
The apparatus remaining as in the laft experiment, 
and the two clouds continuing to be charged, I took 
away the ftand with the point; then the moveable arti- 
ficial cloud was attracted down to the ball, and ftruck as 
before. I then placed the ftand with the point clofe to 
the ftand with the ball; on which the point became in- 
ftantly luminous, and immediately the moveable artifi- 
cial cloud gave over ftriking, foon returning from the 
ball and fettling nearly in an horizontal pofition. There 
the point carried off the eledtric fire as in the thirteenth 
and fourteenth experiments. 
OBSERVATION. 
From the thirteenth experiment, with the point under 
one end of the moveable artificial cloud, and a three 
4 inch 
