"The points to be aimed at in an accumulator are longevity and energy, or,
rather, rapid yield per kilo. From both points of view accumulators of the
Plante type (and consequently those of Montaud) are far superior to those
of the Faure type. My opinion, therefore, is that the Montaud accumulator
is very practical, that it is a great improvement on the Plante type, and
that it can compete successfully with the other systems in use."--_Revue
Internationale de l'Electricite._

* * * * *




ELECTRIC REGISTERING APPARATUS FOR METEOROLOGICAL INSTRUMENTS.


Mr. E. Gime, whose name is not unknown to our readers, sends us a
description of a certain number of meteorological apparatus to which he has
applied a peculiar method of registering that it is of interest to make
known.

[Illustration: FIG. 1.--DIAGRAM OF GIME'S TELEMAREOGRAPH.]

Mr. Gime in the first place has devised a "telemareograph," that is to say,
an apparatus designed to register at a distance the curve of the motions of
the tide in a given place. The structure of this device, shown
diagramatically in Fig. 1, is very simple. It is divided into two distinct
parts--a transmitter and a registering apparatus. The transmitter consists
of a long glass tube, A, closed at one end and communicating through the
other with a receptacle filled with mercury. A barometric vacuum is formed