The Bossier banner. [volume] (Bellevue, Bossier Parish, La.) 1859-1952, 1893-01-05
SCIENCE AND INDUSTRY.

output was $4,000, 900 a year betwsen
1910 and 1860, and S25, 900, 900 a year be-
tween 1860 and Pittsburgh Dis
patch.
During last year nearly six millions
of skins were imported into England. o.
| Australian opoSsumS there were 2254-
900; of muskrat, 1896 900; skunk, 554,-
900; raccoon, $40, 100; fur seals, 125, 700;
bear, 12,7O0; beaver, II, 600; chinchilla,
7,700, and otter, 7,30O-N. o. Times.
| Democrat
The blue color of the sky is proba-
bly, merely the color of the air, seen
through length of about forty-five
miles 1t has been observed by those
who have ascended about five miles
above the earth's surface that the sky
appears of dark inly hue, owing to
the very small reflection and dispersion
of the light, while the blue color no
longer appears above, but below them.
Similarly, the blue color of distinct hills
is owing to the same cause.
The astronomical world will be
gratifed by the intelligence that Prof.
Barnards discovery at the Lick observ-
atory of Jupiter's fifth satellite, which
was announced last winter, has been
confirmed by the observation at Prince
ton. Prof. Young, of Princeton, tele-
graphs that the fifth Jovian moon was
found on two successive nights within
the past week. Of course no one doubted
the correctness of Prof. Barnard's OBJ
servations, but their confirmation by
other experienced observers is a salts
faction.-N. Y Herald.
/ DR. Daremberg, the official investi-
gator in the French capital, gives a
simple safeguard against the infection
of cholera. A solution of seven and a
half grains of citric acid to quart of
water will, he says, absolutely destroy
the bacillus of cholera, and if the
strength of the solution is raised to
fourteen grains to the quart it will also
kill the bacillus of typhoid. Nothing
could be simpler than this, for citric
acid and sugar in water make a deli
cious and quite wholesome lemonade,
and the strength prescribed would
hardly do more than make the water
slightly acid to the taste.
| Several manufacturers in Europe
are using aluminium in the construc-
tion of bicycles, says Iron. The alum
| inium is alloyed with small percent
! age of titanium, which is said to in
crease the strength of the aluminium
very considerably. The folio ing are
| given as the results of tests of the ALLOW
and metal used for this purpose: Ten
sile strength of aluminium %, 800 lbs.
per square inch; titanium alloy 73, 500
| lbs. The tensile strength of the alloy
is very great if these figures are correct
1t is greater than that of wrought iron
and steel (4S, 900 to 81, 900 lbs. but it is
not so great as steel wire, which has
tensile strength of nearly 200, 900 lbs
| per square inch.
Professor Dewar was able, in lee
ture on chemistry in London lately, to
| produce liquid oxygen in the presence
of the audience literally by pints, and
to pass liquid air about the room in
claret glasses Oxygen liquefies at
! about $50 degrees below zero, and air at
343 degrees below zero. If the earth
were reduced to n temperature Of $50
| degrees below zero, it would be COW
cred with sea of liquid air thirty-five
feet deep. Professor Dewars process
of liquefying oxygen and nitrogen was
with a hundred pounds of liquid ethy-
| lene and fifty-pounds of nitrous oxide,
! with the aid of two air pumps and two
compressors driven by steam.
The whole solar system, astronO-
mers say is strewn with particles of
matter known as stardust, while larger
bodies known as meteoroids, chase one
another about the sun at intervals of
few miles. C,dally when these meteor
oids encounter the earth's atmosphere
| they break into small fragments and
| fall harnlessly tc the ground. 1t is
| thought that 600 or 100 of these meteoric
5sstones reach the surface of the earth
unbrokefl in the course of a year, while
the number of small particles which
fall has been estimated at 1000, 900
| day. II the air did not act as cushion
no casualty would be more common than
being hit by a meteorite.
"A mixture Of rye flour and peanuts
| has been recently used by the German
| health authorities in bread making. 1t
was discovered that the refuse left after
the oil has been extracted from peanuts
contains so per cent of albuminous
matter. Such being the case, bread
made with an admixture of peanuts or
peanut refuse would certainly be highly
nutritious, inasmuch as the nutritive
element of any kind of bread is mainly
albuminous. Wheat and rye fours have
only about IL or II per cent. of albumi-
nous matter in them. When oil has
been extracted by pressure or otherwise
from vegetable substance, the residue
is called "oil cake" All oil cakes are
| largely albuminous. Flaxseed oil cake
contains mere than 40 per cent. of such
elements, and the oil cake of cottoaseed
| is about the same
| \ Wise Teacher.
Father-Do you think my daughter
will ever be able to sing?
| Teachcr-Nevare monsieur