138 On Magnetism. [ Fes. 
the two fluids. Let us conceive another bar, C, possessed of the 
magnetic energy; that is, having its fluids ezrculating, the austral 
4 
< 
fluid issuing from s and again entering the bar at 2; while its 
Loreal fluid proceeds from v, and enters the other extremity at 5; 
this fluid being represented by the dotted line, and the austral fluid 
by the continuous line. Let us now conceive the magnetic bar C 
placed upon the bar of iron D, in order to excite the magnetic 
energy in the latter; the immediate effect is, that as soon as C 
comes in contact with a in the bar D, the auséral fluid issuing from 
s impels the austral fluid from the sprface of a, and this portion is 
driven in the general circulation of C froniS to N. The austraé 
fluid of a, lying on the facet of a, next to 2, is also affected, and 
rushes into the common circulation. While the awséra/ fluid of C 
has produced this effect upon the ausfral fluid of a in the bar D, 
the loreal fluid of the latter undergoes a similar change from the 
circulating loreal fluid of C coming from. Hence the loreal 
fluid belonging to a, in the spaces a k and a L, is impelled from 8S, 
and enters the bar C at s with its circulating fluid, and thus a be- 
comes an element of the magnet C. Now while C is sliding over 
b, the austral fluid of c, lying on its surface in the space c m, rushes 
forward, to compensate the loss of the fluid from a, which is going 
into the general circulation of C. Thus, in the same manner as @ 
became an element of the magnetising bar C, J and c also become 
elements. It is now easy to perceive how a continuation of the 
* process will successively convert d e f g hi, likewise, into elements; 
so that when the magnetising bar is removed, there will be a com- 
plete circulation of the two fluids around the molecule abc def 
zhi; the austral fluid will issue from S, and enter at N, while 
the Loreal fluid issues from N, and enters again at S. 
Let us suppose the magnet C again placed over the molecula a in 
the bar D; the consequence will be, that the loreal fluid of C 
issuing from m will impel the doreal fluid from the surface of & 
oO 
