Amador ledger., 1906-03-02


Electric Records of the BODY
Man With Horse Digestion. Mic,
Monitors. New Art IN Photographs
Fertile Fishes. Artificial Meat. =
Valuable Glass.
The one-plate Lascelles- Davidson
process is claimed to yield beautiful
photographs IN colors through tn,
color selective action of the varying
grades OF density of an ordinary bro
mide print. The negative must be
fully exposed and we'll developed
when he white of the natural scene
Will be Opaque; the blue, semi.
opaque; the green, of middle density
the yellow, of somewhat less density
the red, faint, and the black will
show clear glass. From this negative
a bromide positive is printed, de-
veloped and fixed in the usual way.
The print is then thoroughly washed,
bleached in special compound.
rlnsed, and the re-developing COM
pounds are applied all over it. If
the red is applied first the red and
yellow deposits on the print are
affected, developing up to a red. The
blues and green's only develop when
the compounds for those colors are
applied. then they are gradually built
up IN the deposit of the print, and
the white takes no color at all, wash
ing quite clean unless development
has been carried too tar.
The galvanometer may be made to
tell US much about ourselves. A
Swiss engineer, Herr E. X. Muller.
has been testing electromagnetical
apparatus of treating headache and
other nervous disorders, and in
cidentalIy is measuring the electrical
resistance of the human body. Ibis
resistance is less in drinkers and
smokers than in others. 1t varies
with physical condition, with the
time of day, with physiological
action, with pain and other sensa-
tions, with thought, and even with
dreams.
A prize of $500 has been offered by
the Hydraulic Power Syndicate of
Grenoble, France, for a device auto
matically limiting the consumption
OF electric current on the line of any
user of power or light.
A peculiar digestive engine of the
horse converts cellular tissue into
sugar, and makes it possible for this
animal to disgest certain amount of
woody fiber. An English wood sawyer
seems to be blessed with the stomach
of horse, as he has discovered that
common deal wood, cut small, is
valuable food and medicine, with
which brown bread is not to be COM
pared for tonic and invigorating
effects. The London Lancet points
out that the woody fiber may be con-
verted into sugar by the prolonged
action of acid, and the sugar Is
valuable food of its class. For
human gastric juice to extract any
thing useful from wood, however, is
a rare idiosyncrasy. AS worn out
shirts and collars may yield sugar in
the same way as wood, it is suggested
that this individual may find his
white shirt superior for the table
even to white bread.
White mice are to be put to novel
use in South Africa. 1t has been
shown that with GA per cent of carbon
monoxide in the air. one of these
very susceptible animals becomes
unconscious in three minutes, but
that man feels on discomfort for
half hour. 1t is urged, therefore,
that operators of coal mines, and even
of metalliferous mines, be required to
test the air by means of these Great
ures whenever the presence of danger
Gus gas is suspected.
Developing Photographic negatives
without the use of dishes is method
lately found to have certain advant-
ages. The plate is wet under water
tap, and the developer is then applied
with lump of cotton wool. Parts
can be extra developed or held back
in manner impossible by the usual
method. The new plan requires care,
however, as there is great risk of un-
even action, and there are many
chances of failure.
The turbot is credited by report
on North Sea fishes with the greatest
fecundity of any fish. In five speci-
mems, the heaviest weighing q
pounds, the number of eggs was from
5 to 10 millions each. A halibut of
81 pounds contained 1,327, 900 eggs.
A glimpse into a field of vast
possibilities was given at Berlin the
other day by DIR. Emil Fischer, who
first produced artificial grape sugar
and uric acid, and is the latest re-
cipient of the Nobel prize for chemi-
cal research. The work of the syn
thetic chemists has brought into pro-
minence the amino-acids, and these
DIR. Fischer pronounces the mile
stones on the road to artificial alhu-
men, although Virchow pronounced
this impossible to build up on