Obfervations in Eleffriciiy.. io<j 
board in his ftudy feventy days from the time he charged 
it. I alfo mentioned a Angular effect of his cylinder,, 
which will feparate the balls of Mr. canton’s eledtro- 
meter, at twelve or fourteen inches diftance, fometimes 
a fortnight after ufmg, though the air of the room may 
have been many times changed, and 3. variety of methods 
ufed to deilrey that power in the interval. As the detail 
is curious, I fhall here iniert one fet of experiments, 
as I find them regiftered in a journal, which Mr. 
hemming took the trouble to make for my fatisfac- 
tiqn. On May 1 3 177 6, the cylinder was ufed, and 
when placed in the cupboard at 1 o o’clock a. m. it fepa- 
rated the balls at feven inches diftance. The power was 
then entirely deftroyed by breathing on it, and the elec- 
tricity marked o, From that time the journal proceeds 
as follows: 
it'i. . 
Day. 
* Hour* 
Diftance at which the 
balls diverge. 
May 13 „ 
X I t A. Mi. 
7 inches,. 
*4 0 
;8 A. M..- 
i * « - i 1 . 
*3 
Breathed on it once. 
V f 
i . « / 1 
9 
Ditto four times, 
» .A 6 i 
8 
Door open till 
. 9j A\ Mi, 
orrfeli I>oi rA 
14 
3 P. JM. 
7 P. M. 
10 Po M.. 
7 
6 
Breathed] 
