times. In spite of this, we have thought it well to point out the mode of
construction adopted by Mr. Courtot, since, owing to the simplicity of the
arrangements, it renders convenient and easily manageable a pile of very
great constancy that may be utilized for supplying incandescent lamps, as
well as for the most varied experiments of the laboratory.--_La Lumiere
Electrique._

* * * * *




THE DISTRIBUTION OF ELECTRICITY BY INDUCTION.


There has been much said in recent times about the distribution of
electricity by means of induction coils, and the use of this process has
given rise to several systems that differ but little from one another in
principle.

The following are a few details in regard to a system due to a Dutch
engineer:

In the month of December, 1881, a patent relating to the distribution of
electricity was taken out in Germany and other countries by Mr. B.
Haitzema Enuma, whose system is based upon a series of successive
inductions. The primary current developed by a dynamo-electric machine
gives rise to secondary, tertiary, etc., currents. The principal line runs
through the streets parallel with their axes, and, when the arrangement of
the places is adapted thereto, it is closed upon the generator itself. In