Diamagnetism.

Chambers's Encyclopaedia, Volume 3: Catarrh to Dion, p. 789

Diamagnetism. Bodies such as iron, when placed in a field of magnetic force, tend to move from places of weaker to places of stronger force. The opposite is true of bismuth and other substances. Such substances are said to be diamagnetic. For further information, see MAGNETISM.

Source scan(s): p. 0802