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V. Experimental Researches in Electricity. By Michael Faraday, F.R.S., 
M.R.I., Corr. Mem. Royal Acad, of Sciences of Paris, Petersburgh, fyc. 8$c. 
Read November 24, 1831. 
$ 1. On the Induction of Electric Currents. § 2. On the Evolution of 
Electricity from Magnetism. §3. On a new Electrical Condition of 
Matter. § 4. On Arago’s Magnetic Phenomena. 
i. The power which electricity of tension possesses of causing an opposite 
electrical state in its vicinity has been expressed by the general term Induction; 
which, as it has been received into scientific language, may also, with propriety, 
be used in the same general sense to express the power which electrical cur- 
rents may possess of inducing any particular state upon matter in their imme- 
diate neighbourhood, otherwise indifferent. It is with this meaning that I 
purpose using it in the present paper. 
2. Certain effects of the induction of electrical currents have already been 
recognised and described : as those of magnetization ; Ampere’s experiments 
of bringing a copper disc near to a flat spiral ; his repetition with electro- 
magnets of Arago’s extraordinary experiments, and perhaps a few others. Still 
it appeared unlikely that these could be all the effects induction by currents 
could produce ; especially as, upon dispensing with iron, almost the whole of 
them disappear, whilst yet an infinity of bodies, exhibiting definite phenomena 
of induction with electricity of tension, still remain to be acted upon by the 
induction of electricity in motion. 
3. Further: Whether Ampere’s beautiful theory were adopted, or any other, 
or whatever reservation were mentally made, still it appeared very extraordi- 
nary, that as every electric current was accompanied by a corresponding in- 
tensity of magnetic action at right angles to the current, good conductors of 
electricity, when placed within the sphere of this action, should not have any 
