The Bossier banner. [volume] (Bellevue, Bossier Parish, La.) 1859-1952, 1890-11-20
scIENcE ANn INpusTRY.

About 9, 900 species of insects, on an
average, have been discovered yearly
during the last century.
I'm some portions of the world at the
time of full moon there is said to be q
tendency toward dimunition of clouds.
Beers, an Austrian sculptor, has
succeeded in discovering a process for
molding marble fluid precisely as bronze
is nodded.
Tho electric spark has been photop
graphed by means of special camera,
in which the sensitive plate rotated
$500 times minute.
One car building company in Penn
sylvania has on hand orders for 2o, 900
freight cars. The largest order is for
10000 cars.
Col Zilimboff, of Siberia, claims to
have discovered in ordinary eggs an oil
by which he can greatly increase the
force of explosives.
Mr.. F. A. Swinden, of Brownwood,
Tex, has an orchard of 1900 pecan
treos-the largest orchard of the kind
in the world. The average yield of
full-grown tree is about fourteen
bushels year, which sells from 50 to 50
bushel.
The eamphor tree flourishes AZ
Tampa, Fla, and its cultivation is said
to be more profitable than any other
business in the State. Camphor can be
distilled at any season of the year and
the tree is not affected by heat or cold.
1t grows very rapidly. The process Of
distillation is very simple.
"A new gas detector, proposed by Mr..
| II N. Warren, is formed by saturat-
| ing asbestos yarn with a solution Of
platinum oxalate, and then igniting
! in a platinum crucible. When heated
to eighty degrees Fahrenheit, this pre-
| pared yarn becomes incandescent in an
atmosphere containing O.5 per cent by
volume of coal gas.
The making of woodenshoes Is quite
business in New York. Not only is
there a big demand for wooden-soled
shoes required by workers in certain
trades, but for the wooden sabots such
as are seen in pictures of life abroad.
French and German women are the
principal buyers of wooden shoes. These
shoes cost about S1.25 pair. They are
mostly worn in the East Side tenement
district
The question, "How is it that tele-
graph lines make a musical sound when
there is no perceptible breeze blowing?"
is thus answered by the Scientific
American: There seems to be particu-
lar directions and strengths OF wind
that correspond with the natural Yibra-
tion period of the wires. A strong wind
out of accord may have little effect,
where slight wind in accord has
powerful effect.
The economy of small electric mo-
tors for industrial purposes is shown in
shoe factory in Brockton, Mass, where
for the last year and a half twenty
five-horse power motor has been rum
ming the machinery. This is being re-
placed with three motors OF fifteen, ten
and fve-horse power respectively, and
a saving of six-horse power is looked for
from the change The electric power
company that furnishes the current
azrees to charge less for the current
foe the three small motors than it did
for the one large one.-N. Y. Sun.
--J. w. Fewkes tells in the American
Naturalist that vegetation exists in hot
springs The highest temperature on
record in which it occurs is 20O7 f.
| This indicates that vegetation may have
occurred at much earlier stage of the
earth's history than has been generally
supposed. The prevailing form of vege-
tation in these heated waters is algse.
Diatoms also occur. but sparingly. They
have been found in Nevada at temper
ature at which the vegetation of hot
springs ia most flourishing, but usually
occur in great abundance in the cooled
waters of hot springs.
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