L 3 § 2 ] 
fluid f j admits but of one kind of electricity || ; and 
maintains, that two bodies cannot be laid to be differ- 
ently electrified, but as they are electrified in a higher 
or lower degree *. On the other hand, it is my opi- 
nion, that there are two eleCtrical fluids (or emana- 
tions of two diftinCt eleCtrical powers) eflentially dif- 
ferent from each other ; that electricity does not con- 
frit in the efflux and afflux of thofe fluids, but in the 
accumulation of the one or the other in the body elec- 
trified ; or, in other words, it confilts in the polfef- 
fion of a larger portion of the one or of the other 
power, than is requifite to maintain an even ballance 
within the body; and, laftlv, that according as the 
one or the other power prevails, the body is electri- 
fied in one or in another manner. 
In thofe refpeCts we differ in opinion. Who is in 
the right is another queltion. The whole feems to 
turn on a fingb point, namely, whether there be but 
one, or if there are two diftinCt kinds of electricity. 
The bounds of this paper do not permit me to enter 
upon a full difeuffion of the point. I cannot, how- 
ever, but obferve, that the whole feries of experi- 
ments mentioned in the preceding papers, tends to 
confirm the diftinCtion, formerly made, of electricity 
into two kinds ; and to Ihew, that there is an elfential 
difference (whatever it be that conftitutes that differ- 
ence) between what is commonly called pofitive elec- 
tricity, and negative. A farther proof of that differ- 
ence arifes from the fuccefs of an experiment, of 
+ EJJaifur I’eleftricitt, p. 160, 161. 
|| Ibid. p. 118, 119. 
* Lettresfur I’e'.effricite, p. 101. 105, 
which 
