Amador ledger. (Jackson, Amador County, Calif.) 1875-19??, 1907-09-13

Available. -Potato Pencils.
In a novel electroplating process
lately developed in France, the
solution-Nh ich may be any OF the
usual plating baths-is contained in a
brush, which is connected to the posi-
tive pole of the electric circuit while
the object to be plated is connected
to the negative pole, and simply
brushing the well-cIeaned object
gives regular and adherent deposi it.
The thickness OF the layer formed de-
Ponds on the duration of the brushing
and the number of applications to
each spot. Larger objects than usual
can be covered, and surface may be
plated with several different metals.
| thus giving varied decoration.
Our physical education consists in
exercising the muscles, and A. Peres
French psychologist, points out that
our senses receive only the training
that cones through general education.
while taste and smell are quite
neglected. a new gymnastic is need
ed, with special training OF each
sense. The acuteness arising from
the exercise of single sense is often
seen, and "a systematic effort to
develop the powers of all will cause
the pupils to observe, listen, feel and
sniff instead of passiVeIy seeing, hear
ing, touching and smelling. The
effect OF the attention and arranging
the organs in certain ways is to give
impressions greater intensity, accur-
acy and serviceabIeness.
The resistances of various roads,
IN pounds per ton of 224U pounds,
have been thus given by an English
authority: Railroads, 10; asphalt,
different grades, 10, % and 30; tram
ways and wood paving, 30; best
macadam, 43 to AZ; best cobbles, 60;
bad cobbIes, 240; dry, hard clay, 100;
sand road, 800; and loose sand, $50
pounds, or % per cent of the weight
moved over it.
The recent discovery by Prof.
d'ArsonvaI of the remarkable actiun
of high frequency electrical currents
IN reducing the pressure of blood in
the arteries seems to promise much in
averting premature old age. In the
apparatus of DIR. Moutier. the patient
is seated within a spiral coil of wire
charged by an alternating current of
40, QUO or so, 600 volts with frequency
of 500, 600 or 100000 alterations per
second, and a few sittIngs of five
minutes each have reduced the
arterlal pressure, as shown by the
sphygmometer, from 10 inches of
mercury to the normal inches, the
cure being permanent and the harden
ing of the arteries effectively arrested.
Ehe rapidity of action is found to
vary chiefly with the digestion-not
with the PATIENTS age. DR.. Moutier
has successfully treated abnormally
low arterial pressure by means of the
electric spray or effluvium, charged
metallic comb forming one electrode
being moved up and down near the
spine while the patient-on an in
suIated stool-grasps the other cleo
trode. In a third form of appli-
cation, relief is given to equity and
rheumatic patients by high frequency
currents conveyed directly to the
body through conductors grasped by
the hands.
A singular forest of stone columns
at DikIIatch, IN Bavaria, has been
visited by Prof. De Launay, French
geographer, who reports that this
ruin-like formation extends over a
space about 1900 feet long by 100 to
l5U feet broad on the edge OF a
plateau in the open country. the
columns being 10 to 20 feet high and
some OF them yard thick, their
shape being absolutely cylindrical.
They have been produced by erosion
of masses of the gray nummulitic
limestone broken by jointing. A
special study WAS made by Prof. DE
Launay. and he concludes that whlrIs
in the bed of a torrent gave the
columns their isolation and shape.
After special study OF the thermal
and mechanical properties of various
steel allows if has heen recommended
that rIvets be made of a chrome
nickel steel: which is 215 times as
strong as the usual metal and can be
USED without special precautions.
StTangest in its habits of all tree
frogs seems to be the new species
Hyla resini6ctrix- lately described
by DIR. Emil A. Goeldi, director OF
the Para Museum. This creature
which is marked with bands of green
ish-yellow, brown and white, with
conspicuous spots-makes its home
IN the tall forest trees along the
Amazon, where it appropriates q
cavity or hollow in some lofty
branch, and proceeds to adapt it to
the required purpose by making il
watertlght. The porous wood is
lined with a coating of automatic
pitch, which is slowly collected as
it drips from the bark of resinous
tree. Rains form a permanent poo
in this tree-top basin, and here the