nerator automatic lamp, reflector, and all the necessary
appendages, is less then one-tenth of the dynamo machine, motor,
shafting, etc., to produce the same result, it would seem to have a
greater claim for its adoption with those who wish to employ the
electric light, whether for work at night, use in the sitting room, or
to assist daylight on the dark and foggy days of winter.

Fig. 2 shows the arrangement of the electric lamp. A is the automatic
regulator; B, the reflector; C, top extension of the reflector; D,
small tissue paper screen to prevent the intense arc-rays from coming
in contact with the sitter; E, stand with sliding rod. This appendage
can be wheeled about with ease, as it is arranged to run upon four
casters.

When the generator is in use it may be placed within easy reach of the
operator, so that the exposure may be made by lowering the elements in
their troughs just for the requisite time, and withdrawing immediately
the exposure is made; there is no need to fear any inconvenience from
deleterious fumes as none are given off, so it may be used in any
studio or sitting-room without any inconvenience from this source, and
as far as many trials have gone, it seems to meet every requirement
demanded by the photographer for the production of portraits by means
of the electric light.--_Photo. News._

* * * * *

DESRUELLES'S ELECTRIC LIGHTER

[Illustration: ELECTRIC LIGHTER.]

The little apparatus shown in the accompanying cut will certainly find
favor with smokers, as well as with persons generally who often have
need of a fire or light. It forms one of the most direct applications
of dry piles of all the systems on the Desruelles plan. Instead of
filling piles with a liquid, this plan contemplates the introduction
into them of a sort of asbestos sponge saturated with an acid or any
suitable solution. In this way there is obtained the advantage of
having a pile which is in some sort _dry_, that may be moved, shaken,
or upset without any outflow of liquid, and which will prove of
special value when applied to movable apparatus, such as portable
lighters, alarms on ships, railroads, etc. It is hardly necessary to
say that while the introduction of this inert substance diminishes the
volume of the liquid, the electro-motive force of the pile is thereby
in nowise affected, but its internal resistance is increased. This,
however, is of no consequence in the applicat