Amador ledger., 1907-08-09

The new atomizer of Paul Kestner,
the French engineer, is a modified
ventilating fan, and for an excessive
ly fine spray the apparatus is a drum
having 600 or more blades around its
periphery, with small supplement-
airy fan at the center of the drum.
The concentration of fluids and the
removal of dust from gases are among
the various uses. The fluid is fed
into the atomizer with hot air or
furnace gases, and the latter carry
away the vapor with which they,
quickly become charged, while the
concentrated liquid settles and can
be drawn off. Coarse dust readily
separates when the gases are passed
with water through the atomizer.
Very fine dust resists wetting, and
for this three atomizers are used, the
first charging the gases with warm
vapor, the second condensing the
vapor on the dust PARTICLES by cool
ing, and the third removing tie dust,
which has been thus completely
moistened.
Sunshine and health are usually
supposed to go together. but Surgeon
Chas. E. Woodruff, U. S. A, points
out that excessive sunlight has
harmfulness that cIimatoIogists have
neglected. 1t retaIds vegetable growth
and inJuIiously affects animals. The
best developed men are not found in
the sunnIest lands, dark forests are
chosen as sanitaria, and too much
light is guarded against IN treating
tuberculosis, etc. 1t is urged that
city Fairgrounds should be shady
parks instead of stunning sand baths.
The death of Sir William Perkin,
which occurred in London on July IA,
has drawn renewed attention to the
marvels of color chemistry. Since
his discovery of anlline purple in
1856, his process has yielded TOO
shades, and the resulting Industries
now employ 40. 600 men in Germany
and 500. 000,O9U of capital in the
United States.
The singIe-plate process of color
photography, upon which the Lumiere
Brothers of Paris have been working
several years, has reached the stage
where it is possible to take picture
in colors upon single plate in an
ordinary camera with an exposure of
one second or less. The special plate
requires little more manipulation
than that of ordinary photography.
In making the plate, the glass first
receives a single layer of stained
grains of potato starch, an intimate
mixture of orange, green and violet
forming microscopic mosaic OF So
million PARTICLES to the square inch,
with no vacant spaces; and this color
screen is protected by coat of water
proof varnish having the same refrac-
tion. A final coating is of gelatino-
bromide emulsion made sensitive to
all colors. The plate is exposed with
the glass back to the light and the
rays entering the camera are absor bed
by the starch grains of complementary
color and passed by others, blue, for
instance, being taken up by the
orange grains, while green and violet
pass and act on the emulsion. White
light acts under all colors. On de-
velopment, the emulsion is black
under portions reached by white light
and transparent where the rays have
been absorbed, so that the colored
grains showing through give picture
of NcoIors Complementary to the
original. A bath of acid permangan-
ate ofASotash reverses the picture,
bringing out the natural colors, by
dissolving out the reduced silver and
-bIackening other parts of the emul-
sion; while a diamidophenoI bath
and varnish give brightness to the
cclors.
The artificial resplrator of Prof.
George Poe of Virginia, simultaneous
Iy pumping gases from the lungs and
forcing oxygen into them, is claimed
to accomplish wonders in reviving
victims of drowning, suffocation, and
poisoning by anaesthetics. 1t in
cludes two small cylinders, tubes
leading to the nostrils, and plungers
that are worked by hand at the
normal rate of breathing, one cylinder
connecting with an oxygen supply.
A rabbit, dead" from morphine and
ether. was made to run about in six
months.
In India the intense heat during
most of the year makes fans of some
kind necessity to the comfort of
Europeans, and great success is pre-
dicted for the new apparatus that is
being introduced by German firm,
and which consists of portable fan
driven by a hot-aII engine using
kerosene as fuel. The new fan is
less expensive and more convenient
than the electric fan and far more
effective than the old fashioned
''punkah, or screen swung by a
servant. The lamp, holding about a
quart of oil, has small glass chin
ney fitting into q larger metal chin