•'832 Mr. nairn e’s Experiments tojhew the 
tance of four feet fix inches, but with a ball of three 
inches diameter only at two feet. 
E X P E R I M £ N T X. 
I took another flick of fealing wax, one inch and 
three tenths diameter, and about ten inches long, and 
pafted on it round pieces of tin-foil of half an inch in 
diameter, at about half an inch diftance from each other. 
One end of this flick of wax was fcrewed to the receiv- 
ing rod d, fig. 2.; and into the other end was fcrewed 
the pointed wire ufed in the fourth experiment. I then 
laid a piece of brafs on this wax, fo as to connect all the 
feparations of the round pieces of tin-foil except two; 
then the point of this wire on the wax was placed nearly 
in contact with the ball. On charging the artificial cloud 
the electric fire now flruck to the point, and continued 
to ftrike to it all the while it was gradually removed to 
the diftance of one inch and one tenth: beyond that 
diftance it would not ftrike, but the point continued lu- 
minous till it was removed to the diftance of three feet. 
EXPERIMENT XI. 
The apparatus remaining as in the laft experiment, I 
only took away the piece of brafs which laid on the wax 
to 
