upon our disk machine, and had almost forgotten our meter. The whole
apparatus is mounted on a base, K.

[Illustration: DIAL FACE.]

JEHL AND RUPP.
Brünn, Sept. 26, 1887.

* * * * *




STORAGE BATTERIES FOR ELECTRIC LOCOMOTION.[1]

[Footnote 1: From a paper read before the National Electric Light
Association, New York, August, 1887.]

By A. RECKENZAUN.


The idea of employing secondary batteries for propelling vehicles is
almost contemporaneous with the discovery of this method of storing
energy. To Mr. Plante, more than to any other investigator, much of
our knowledge in this branch of electrical science is due. He was the
first to take advantage of the action of secondary currents in voltaic
batteries. Plante is a scientist of the first grade, and he is a
wonderfully exact experimenter. He examined the whole question of
polarization of electrodes, using all kinds of metal as electrodes and
many different liquids as electrolytes, and during his endless