W. A. Norton on Molecular Physics. 65 
External Action of an Electric Current upon bodies in their 
natural state—In undertaking to deduce from our fundamental 
wae the varied phenomena of the action of a current upon 
diamagnetic, If the two tendencies countervail each other, the 
substance is in a neutral magnetic condition. The neutral mag- 
netic state may also result from the absence of groups of parti- 
cles in the substance, within which circular currents can be 
established. 
so-called. Experiment has hitherto failed to detect the exist- 
ence of any current, from one such molecule to another, or 
an established current. All such induced currents result from 
either an increase or a decrease in the effective action of the in- 
but remains constant so long as this action continues the same. 
This polarization is Faraday’s “Electro-tonic state” of bodies. — 
Magnetism.—The general nature of the magnetic currents, as 
Am. Jour. Sct.—Szconp Sertzs, Vou. XL, No. 118.—Juxy, 1865. _ i 
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