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Scientific American Supplement, No. 598, June 18, 1887 by Various
page 120 of 124 (96%)
magnet; (3) that an electromagnet produces exactly the same effect whether
it be or be not excited by a current; and (4) that a glass tube filled with
cold or warm water likewise produces analogous effects, which disappear
when the water is raised to the temperature of the human body.

It seems, therefore, that the magnetic properties of the magnet count for
nothing in the phenomena observed.--_Journal de Physique_.

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