No alteration has been made in the burners
employed, and no "consumers" have been used over them. If the varnished
paper ceilings are tried, I am sure that every one will like them better
than the time honored dirty whitewash, which is simply a fine sieve.
This fact is clearly shown by the appearance of the rafters, which,
after a short time, invariably show themselves whiter than the spaces
between.
* * * * *
ANDERS' TELEPHONE.
Mr. G.L. Anders' telephone, shown in the accompanying cut, combines in a
single apparatus a transmitter, A, a receiver, B, and a pile, C. The
transmitter consists of a felt disk, a, containing several large
apertures, and fixed by an insulating ring, c, to a metallic disk, d,
situated within the box, D. The apertures, b, are filled with powdered
carbon, e, and are covered by a thin metal plate, f, which is fixed to
the insulating ring, c, by means of a metallic washer, g. Back of the
transmitter is arranged the receiver, B, which consists of an ordinary
electro-magnet with a disk in front of its poles. The pile, C, placed
behind the receiver, consists of a piece of carbon, h, held by a
partition, i, and covered with a salt of mercury, and of a plate of
zinc, l, which is held at a distance from the mercurial salt by a
spring, m, fixed to the insulating piece, n.
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