Aberdeen herald. [volume] (Aberdeen, Chehalis County, W.T.) 1886-1917, 1905-10-05
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About seventy specimens of the ex
tinct great aux are now preserved in
museums. A specimen recently sold
In London brought $1,000.
While astronomers have been taking
notes and discussing changes in The
aspect Of the moon, NJ. Puiseaux, a
Frenchman. has been looking up data
Going over all records, from the earli
est observations to the latest he con
cludes that the reality Of the supposed
changes has not been proved, and that
the varying sentiveness Of the retina
for faint objects is sufficient to &c.
count for the difference seen, while
different conditions Of exposure might
explain all appearances in the photo
graphs.
Some recently invented chronophoto-
graphic cameras by Lucien Bull, OF
Paris. take successive pictures at rates
from 1000 to 1000 per second. The
source Of light Is the spark Of an In.
duction coil, which, 1t is calculated,
endures only about one two-millionth
Of second, so that with improved
mechanism, the successive images
could be taken at a far more rapid
rate than is now employed. Six hun
dred images per second, however,
suffice to show clearly the moving
wings Of dragon-fy, and with LOO
or 1900 images per second, sharp pic.
lures have been obtained of bees and
house files in fight.
Tho Scientific American calls atten.
ton to the danger attending the wear
ing of adulterated leather. A large
amount Of cheap leather is weighted
so that when the weight test Is applied
such adulterated leather may pass rs
first-quallty material. Leather so treat
ed. however, has the peculiar quality
OF absorbing moisture freely and re-
talhing 1t to an extreme degree. The
result is that n shoe made of this
chemically treated material Is in act
uality never dry. Even In the driest
weather the perspiration of the feet
is sufficient to render the footwear
dangerous, as such natural moisture
collects on the inner sole.
The secret wireless telephone Of A.
T. NJ. johnson, a retired Australian
official, depends upon steel reeds tun-
ed in unison or octave to the voice Of
the person speaking. and, as voices
vary greatly, Il special reed Is neces.
sary for each person. On speaking
into an ordinary microphone, a large
Ruhmkorff coil in circuit transmits the
vibrations. without connecting wire,
to the receiving apparatus. Messages
have been sent to distances Of half a
mile. Secret kilograms can be sent
through similar tuned steel reeds. and
these are received by a secret bell ar.
ranged to respond only to the vIDra-
tions from the proper transmitter.
During the present summer Mr..
Clayton. Of the Blue Bill Observatory,
Is cruising, with steam yacht belong
Ing to the French meteorOlogist. Tells
serene de Bort, in the trade wind re-
gion Of the Atlantic Ocean. in order to
sound. with the aid Of kites and bal
looms. the air strata up to height Of
1900 feet. Among other things, he
will endeavor to reach the lofty south
west. or return. trade wind, supposed
to blow in the nelghborhood Of the
Canaries, the Azores and the Cape
Verde Islands. This wind has actually
been observed only Oh the summit Of
the Peak of Teneriffe. An attempt
10 reach it with kites from the Prince
Of Monacos yacht last summer was
unsuccessful.
In the novel method Of electric weld
Ing Of Berlin firm, the heat applied
s evolved by an electric arc formed
between the working piece and a car
bon electrOde at the place whore the
weld Is to be made A relatively small
electric generator is used with a stor-
age battery connected up in parallel.
and the carbon, fixed In the holder.
s readily shifted as desired. The great
heat melts both the working piece and
the metal to be welded insuring an
Intimate juncture. Welding material
Is supplied until the Joint or aperture
Is filled. and by gradually reducing the
arc the weld Is cooled slowly. The
process supplies especially cheap and
simple means for making small repairs
In large castings.