e phenomena, induce me to think
that the latter can be fully explained without admitting the
electro-tonic state. My views on this point will appear in the second
series of these researches.--M.F.

60. Whilst the wire is subject to either volta-electric or magneto-electric
induction, it appears to be in a peculiar state; for it resists the
formation of an electrical current in it, whereas, if in its common
condition, such a current would be produced; and when left uninfluenced it
has the power of originating a current, a power which the wire does not
possess under common circumstances. This electrical condition of matter has
not hitherto been recognised, but it probably exerts a very important
influence in many if not most of the phenomena produced by currents of
electricity. For reasons which will immediately appear (71.), I have, after
advising with several learned friends, ventured to designate it as the
_electro-ionic_ state.

61. This peculiar condition shows no known electrical effects whilst it
continues; nor have I yet been able to discover any peculiar powers
exerted, or properties possessed, by matter whilst retained in this state.

62. It shows no reaction by attractive or repulsive powers. The various
experiments which have been made with powerful magnets upon such metals, as
copper, silver, and generally those substances not magnetic, prove this
point; for the substances experimented upon, if electrical conductors, must
have acquired this state; and yet no evidence of attractive or repulsive
powers has been observed. I have placed copper and silver discs, very
delicately suspended on torsion balances in vacuo near to the poles of very
powerful magnets, yet have not been able to observe the least attractive or
repulsive force.

63. I have also arranged a fine slip of gold-leaf very near to a bar of
copper, the two being in metallic contact by mercury at their extremities.
These have been placed in vacuo, so that metal rods connected with the
extremities of the arrangement should pass through the sides of the vessel
into the air. I have then moved powerful magnetic poles, about this
arrangement, in various directions, the metallic circuit on the outside
being sometimes completed by wires, and sometimes broken. But I never could
obtain any sensible motion of the gold-leaf, either directed to the magnet
or towards the collateral bar of copper, which must have been, as far as
induction was concerned,