Amador ledger., 1908-12-25


or vibrating plates, each responding
only to impulses of the period of one
of the vibrators. The M orse signals
are not only heard in an ear-tube but
il necessary, they can be made to
reisgter as we'll. For this delicate
lever is placed against the telephone
disk, and as the disk vibrates the
lever is repeatedly repealed, making
contact for local battery circuit
through Morse or Hughes register.
Such device Is the monotelephonic
relay. In late trial over 540.mile
line between Paris and Marseilles, six
Hughes instruments and six mono
telephone relays we're used at each
end, and twelve different messages
we're sent over the same wire at once.
Two Instruments using direct current
were also operating on the line.
There was no interference, and it Is
believed that much larger mum Der
of messages can be sent simultane-
ously.
Vulkanol, new artificial paving
stone that is being tried In leading
German cities, is a mixture of crush
ed basalt or similar rocks with a
small percentage OF cement. The
material is made into blocks by
hydraulic pressure, burned about
twelve days in a special furnace, aud
cooled slowly. Pavements are laid
on concrete or macadam, thin sheets
of the vulkanoI being used for side
walks. 1t is claimed that the pave
ments cost less than granite or con-
crete, are tough and durable. are so
hard aud close-jointed as to be quite
free from dust, and are more easily
cleaned than other kinds.
The new ferryboat at Giulleboeuf,
near the mouth of the Seine, has
two paddle wheels, which are driven
at 30 revolutions per minute by two
electric motors making $40 revolu-
tions. Current for each motor is sup
piled by a De Dion gasoline engine
and dynamo of 10 horsepower.
While it may not be possible to
lengthen life greatly or indefinitely,
as Metchnikof and others have been
inclined to think, it must be true
that enlightened care will add to the
efficiency of the human engine and
tend to Iengthen to some degree it's
period of service. DR.. Doyen, of
Paris, has been studying 9the agents
that change the human body in the
process of aging, and finds that they
represent poisoning from food
and the various disorders experienced
in every lifetime. In bis search for
a remedy for the self-poisoning, he
has found himself able to strengthen
the white corpuscles of the blood in
their continual struggle with invad-
ing microbes. He has discovered
liquid ferment principle that he
calls "Mycolysine," and, while this
is not claimed to be an elixir of life,
it has the remarkable property of in
creasing the production of leucocytes
or white bloud corpuscles, and thus
adding to the power of destroying
harmful microbes before they can
cause infection. A practical use Of
this discovery is the shortening of the
duration of number of common
maladies. A cold in the head may be
haI
bronchitis, pneumonia and other dis
eases of the respiratory organs are to
some extent prevented, as are also
certain diseases OF the digestive
organs, and even ia diphtheTia the
added white corpusclos give effect to
anti diphtheIitic serum.
A portable engine and boiler built
by K. Wolf, of Magdeburg, have
shown remarkable results in tests
made by Prof. M. Guttermuth, of
Darmstadt. When developing 103
horse power, the engines steam con-
sumption was only $3.50 pounds and
the fuel consumption only LOG
pounds per horse, power hour. The
engine works on supeIheated steam,
and is compounded, both cylinders
being in the smoke-boX and thus
jacketed by the hot fiue gases.
The flaming arc light can be given
a great variety of colors by varying
the material impregnating the carbon
electrodes. Yellow, pearl white, aud
red carbons are now sold-calcium
salts yielding the yellow, strontium
the red or pink, and barium the