The Republican. [volume] (Oakland, Md.) 1877-current, 1892-11-24
SCIENCE AND INDUSTRY.

In 1860 our product of hardware
was valued at $3.50, 000, 900; in lsss at
$780, 900, GOO. The annual addition to the
output was $4,000, 600 year between
1910 and 1860, and SIS, 600, 600 year be-
tween 1860 and ISsS.-Pittsburgh Dis
patch.
During last year nearly six millions
of skins were imported into England. OF
Australian opossums there were ,, 254,-
600; of mus6rat, l, 500, 900; skunk, 554,-
900. raccoon, $40, 100; fur seals 125, 200;
bear, IL, 200: beaver, 1l,6oo; chinchilla,
400, and otter, 7,900-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 assembled about five miles
above the earth's surface that the sky
appears of dark inky 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.
Barnard's 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 BarnardNs OBJ
servations, but their confirmation by
other experienced observers is salts
faction.-N. Y. Herald.
DIR 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 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
arc using aluminium in the construc-
ton Of bicycles, says Iron. The alum
inium is alleged with small percent
age OF titanium, which is said to in
crease the strength of the aluminium
very considerably. The following arc
given as the results of tests of the alloy
and metal used for this purpose: Ten
sile strength of aluminium %, 500 lbs
per square inch; titanium alloy IS, 800
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 $1,000 lbs but it is
not 50 great as steel wire, which has
tensile strength of nearly 100000 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 hqueSes at
about 25odegrees below zero, and air at
343 degrees below zero If the earth
were reduced to a temperature cf $50
degrees below zero it would be COW
cred with a 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
comprcssors driven by steam.
The whole solar system, astrono-
mers say. is strewn with PARTICLES of
matter known as starlnst, while larger
bodies, known as meteoroids, chase one
another about the sun at intervals of a
few miles. Usually when these meteor
ODDS encounter the earth's atmosphere
they break into small fragments and
fan harmlessly tie the ground 1t is
Thought that 600 or roof these meteoric
stones reach the surface of the earth
unbroken il The course of a year, while
the number Of small particles which
fan has been estimated at 1000, 900 a
day. If the air did not act as cushion
nocasualty would be more common than
being hit by meteorite
"A mixture Of rye -four and peanuts
has been recently used by the German
health authorities in bread making. Tt
was discovered that the refuse left after
the oil has been extracted from peanuts
contains 80 per cent of albuminons
matter. such being the case, bread
made with an admixture of peanuts or
peanut refuse would certainly be highly
nutritious, inasmach as the nutritive
element of any kind of bread is mainly
albuminous Wheat and rye aoars have
only abont IL or IL per cent of albumin
nous matter in them. When oil has
been extracted by pressure or otherwise
from a vegetable Substance, the residue
is called >'oil cake All oil cakes are
largely albnminous. Flaxseea oil cake
contains more than 90 per cent of such
elements, and the oilcake of cottonseed
Is about the same
Doing Things Easily.
''Do sit down, said the wise mother
n