Amador ledger., 1910-05-20

photographs are obtained by taking three
Simultaneous pictures under different
light-hter plate of the three primary
colors, and then using three lanterns to
project upon screen the partial pictures
from the blue, red and green filters, so
that all fall on one spot. The partial
pictures combine to give a complete
picture in natural colors. For a dozen
years or more Vim Friese Green, an
English photographer, has been per-
fecting cinematograph using the
"three-color process" and has found
that for colored moving pictures actual
superposition is not necessary, the ex.
posures being made in rapidly succeed
ing alternations of red green and blue
filters. An endless band Of transparent
celluloid with the alterations of color
repeated throughout its length, serves
for the filter In practice, to avoid too
rapid movement of the band. two ma
chimes are used for exposure and two
for focusing the images on screen, a
shutter rapidly closing the lens of each
machine in turn. The two bands are ar
ranged so that the colors are exposed in
correct order, while the two projection
lenses are accurately focused upon the
same spot. This system, though
simple in theory, involves great me-
chanical details, but has been SO worked
out that colored moving pictures are a
success.
Successful artificial fabrics, made
from cellulose without weaving, are
anticipated by a German authority.
Various processes have been patented in
two classes. In one class, the cellu-
lose paste is divided mechanically into
faments, which are assembled in an
interlacing network of various types;
but in the second class the cellulose
solution is given kind OF ibrous
crystallization by chemical action, the
fbers being laid in all directions in a
kind of felt instead of in geometrcal
patterns. The second class is thought
to be the more promising.
Brackets supported by rubber suction
cups may be attached to window pane
or other smooth surface. and are so well
made as to hold up a showing mirror
for weeks.
sense organ hitherto overlooked in
creatures so well known is the Moe
tudae, family of butterflies or moths,
is the surprising recent discovery of
German natrralists. The regular flight
of the butterflies while persons ap-
preaching were still at considerable
distance away led Tetens to suppose that
they must have some organ for perceiv-
ing sound, and he concluded two pit
like depressions at the first posterior
segment of the body might be organs of
hearing. An investigation by DR..
Deegener seems to confirm this theory.
At the line of separation of the body
and the abdomen, near the points of at
tachment of the rear wihgs, deep
channel toward the surface is sur
rounded by number OF humps, and the
ridge nearest the back has true sensitory
cells and sensitory hairs. Though in
rather unusual location, the sensitory
ridge seems to have the character of a
real sense organ.
Making the telephone set and wind
the clock is a novel idea late lyattempted
by w. w. Dean. The limb of the
telephone line that, when out of use, is
connected to ground at the central office,
is in the new system connected to the
subscribers hook lever, and reaches
ground through lower contact and the
coil that winds and sets TIE clock. The
ground to ground circuit has no result.
When the clock is to be set and wound,
master clock at the proper instant
closes a circuit, momentarly switching
current from a battery at the central
Office for ground through the winding
and setting coil. The clock is then
acted on by the coil.
The volcano of Matavanu, in Savaii,
one of the German Samoan Islands, was
formed by an explosive eruption in 1905.
Describing it to the London Geological
society. DR.. T. Anderson states that
the discharge of fluid basic lava has run
by devious course of about ten miles
to the sea, depositing fields of both
shaggy and cindery lava, filling valley
to depth of 400 feet, and covering the
most fertile land. Like Klauea, the
crater contains a lake of incandescent
lava. This is so fluid that ii beats in
1. IL. -L... E.....L