Amador ledger. (Jackson, Amador County, Calif.) 1875-19??, 1906-08-03

-PIeglaclal Axe. Where Ovens ar
Hottest Life Under Pre- ssure.
Consumptive Hearts.
The new tish-car of DIR. Eueeu,
Erlweln, German, carries no heav,
tank of water but keeps the fish aIiv
during long journeys in supply O
liquid just sufficient to keep the gill
moist. Small pumps keep the waite
IN circulation, passing it through al
apparatus that charges it with oxygel
and extracts the carbonic acid. Ii
the laboratory, the fish are placed OF
shelves in large glass case, and here
entirely out of water pike, trout, anc
other filmed creatures live con.
tentedly for an indefinite time, hav
Ing been shown to be as much alive
as ever at the end of thirty hours
Ihe oxygen supplied is kept moist BY
passing through water and by wet
cloth on the floor of the case.
Red is believed by DR.. Beddoe, G
European anthropologist, to have
been the original color of the hair Of
Europeans, and he attributes the
brown pigment to the action of heat.
he'd hair Is occasionally found among
the negroes, and dull dark hair
among the pigmies of Central Africa,
Chinese and Japanese adults always
have black hair, but Japanese child
rem sometimes have dark reddish
yellow hair, and Chinese children
may have brown hair.
AS protective coating for iron,
cadmium is proving much superior to
zinc. The coating looks like zinc, but
it is much more adhesive, and harder,
1t furnishes less rapidly, and with
stands the fumes OF acids better.
A diamond burning in the electric
arc was lately exhibited on a screen
by Sir William Crookes. The stone
could be seen to sprout and swell and
blacken under the intense heat until
nothing remained but swollen lump
of graphite.
Reasons for expecting astonishing
results from the treatment OF certain
eye diseases at elevated stations have
been found by DR.. Robert Dolnoy,
of Paris. From balloon at height
OF 5000 feet falling bottle was
watched until it reached a lake, and
was then seen as it sank, and ex-
animation at a greater altitude show
ed much distension of the pupils as
an effect of the rarefied atmosphere
with increased constituencies of the
optic nerve. This remarkable sensi-
tiveness should greatly aid the usual
remedies. Two common eye troubles
are glaucoma and choroiditis, or the
releasing and loosenlng of the retina.
and these are among the diseases that
should receive especial benefit.
Cortlcite, the new Portuguese heat
insulating material, has granuIated
cork for its principal component
and it is claimed to be a perfect
insulator, resisting the greatest
extremes of climate and the attacks
OF insects. even of white ants. 1t can
be sawed and bored like wood. 1t is
not infiammable, and is of value for
many purposes. A covering of it for
steam pipes and boilers is claimed to
effect great saving of heat, CORES
pondingly reducing the temperature
of the boiler room.
The oldest stone axe known is
claimed by M. B. Cotesworth, a
Yorkshire man. The semi circular
blade is about eight inches across, an
inch and a halt thick, and ground
down to fine edge, with a stiff st out
haft, possibly cut to lit into a wooden
cleft handle. Striated scratches prove
its pra-glacial origin, and establish
the existence of man in the North of
England in preglacial times.
Carefully suspended thermometers
have shown a German chemist very
material differences in the tempera-
ture of an ordinary air oven, whether
heated by gas or electricity, with
metallic or porcelain walls, with air
ventilator open or shut. The tenn
perature in two of the corners is
usually much higher often as much
as II degrees c. than it is in the
other two col ners or center.
Records show great risk to workers
IN calssons at pressures of four
atmospheres and by divers at depths
of 100 to $50 feet, and the British
Admiralty has fixed the limit for
divers at 10 feet. The most daring
pearl and sponge fishers reach l45
feet, accidentsbeing frequent. Lam
bert, who brought $500, 200 from a
depth of 160 feet, remained below 20
minutes each trip, taking an equal
time in ascending. but at last he was
permanently injured by too long a
stay below. The deepest recorded dive
is 2O4 feet, but the diver died fro
too rapid ascent. Two recent British
Investigators of the effects of high
pressure have shut each other into a
steel cylinder of capacity of AZ feet,
with pump raising, the pressure to
seven atmospheres in 40 minutes. In
this pressure they suffered no harm
when decomposition was gradual and
circulation was aided by movements