designed to give a clearer idea of the mode of winding the armature. In
practice the number of the frames, and consequently that of the plates
of the conductor, is much greater, and the arrangement that we have
described is repeated a certain number of times, the conducter always
forming a circuit that is closed upon itself.

The Thury machines are constructed in different styles. No. 1 is a
100-lamp (16 candles and 100 volts) machine, and Nos. 2 and 3 are
nominally 250-lamp ones, but may be more. Their weight is 1,100
kilogrammes, and their velocity, for 100 volts, is from 400 to 500
revolutions, according to the mode of coupling.

A later type, now in course of construction, is to furnish from 750 to
2,000 lamps, with 250 revolutions, for 100 volts, and is not to weigh
more than 2,000 kilogrammes. Let us add that Messrs. Meuron and Cuenod,
the manufacturers, have likewise applied their mode of winding to
conductors arranged radially upon the surface of a circle. Fig. 5 shows
this arrangement.

In this case the inductors will, it is unnecessary to say, be arranged
laterally as in all flat ring machines. The arrangement will recall, for
example, that of the Victoria machines (Brush-Mordey).

We do not think that the inventors have applied this radial arrangement
practically, for it does not appear to be advantageous. The parts of
conductors which are perpendicular to the radius, and which can be only
inert (even if they do not become the seat of disadvantageous currents),
have, in fact, too great an importance with respect to the radial
parts.--_A. Guerout, in La Lumiere Electrique_.