to cover the whole phenomena of attraction and repulsion, and used
the word paramagnetic to designate such magnetic action as is
exhibited by iron.

Isolated observations by Brugmanns, Becquerel, Le Baillif, Saigy,
and Seebeck had indicated the existence of a repulsive force
exercised by the magnet on two or three substances; but these
observations, which were unknown to Faraday, had been permitted to
remain without extension or examination. Having laid hold of the
fact of repulsion, Faraday immediately expanded and multiplied it.
He subjected bodies of the most varied qualities to the action of
his magnet:--mineral salts, acids, alkalis, ethers, alcohols,
aqueous solutions, glass, phosphorus, resins, oils, essences,
vegetable and animal tissues, and found them all amenable to
magnetic influence. No known solid or liquid proved insensible to
the magnetic power when developed in sufficient strength. All the
tissues of the human body, the blood--though it contains iron--
included, were proved to be diamagnetic. So that if you could
suspend a man between the poles of a magnet, his extremities would
retreat from the poles until his length became equatorial.

Soon after he had commenced his researches on diamagnetism, Faraday
noticed a remarkable phenomenon which first crossed my own path in
the following way: In the year 1849, while working in the cabinet of
my friend, Professor Knoblauch, of Marburg, I suspended a small
copper coin between the poles of an electro-magnet. On exciting the
magnet, the coin moved towards the poles and then suddenly stopped,
as if it had struck against a cushion. On breaking the circuit, the
coin was repelled, the revulsion being so violent as to cause it to
spin several times round its axis of suspension. A Silber-groschen