The Bossier banner. [volume] (Bellevue, Bossier Parish, La.) 1859-1952, 1892-07-14
SCIENCE AND INDUSTRY.

TOM Une UdnDld UneTc are %V,VVV
tons of ground nuts annually exported,
mostly to Marseilles, where the oil is
extracted. Rice, cotton, maize and
grain known as Kous are also largely
grown in Gambia, and the rubber tree
is now being extensively cultivated.
Queensland exported 32,629, 900
pounds of wool in 1891, being 13, 4S0, 900
pounds more than in 1890. This colony
also exported 5,34O tons of frozen meat
in 1891, gain of 2,31s tons over 1890.
There were also shipments of ], 1,130 tons
of preserved meats.
The minimum age of employment
on the continent is generally 12, or from
u to IA. But then English children
only work 2S hours per week, while in
France and Germany the hours are Sc,
in Italy and Hungary 4S, in Holland 66
and in Belgium -.
"A colonial butter factory at Berry,
n. S. W, received 81, 457 gallons of milk
in one month, yielding 81, 1858 pounds OF
butter, which sold for eighteen cents
per pound Farmers were paid five and
one-half cents per gallon of milk, and
it required twenty-six pounds of milk
to make one of butter.
Ostrich farming is one of the i'm.
portant industries in South Africa,
which, as yet, furnishes the bulk of the
ostrich plumes for the markets of
the world. There are probably two
hundred thousand domesticated os-
triches in Cape Colony. Each bird is
| supposed to net his owner forty dollars
| per annum.
| The largest band-sawing machine
in the world has recently been COM
| pleted in England and sent to Tasmania.
| The machine can saw through a maxi
mum depth of seventy-fve inches and
the carriage will accommodate logs fif-.
ty feet long and weighing about fifty
| tons 1t is asserted that this saw cuts
even faster than circular saw, while
wasting rs per cent less wood.s
A good illustration of the amount of
change brought about by deep-sea in
vestigations in our ideas of the distribu-
ton of the fishes is to be seen in the
recent history of the discoboli. 1t is
now shown that the discoboles, disk
bearers, lumpfshes, sucking fishes, or
sea snails, as they are variously called,
are no longer restricted to the Atlantic
and Pacific in their northern parts and
to the Arctic ocean.
The imperial eagle, the largest of
species known, flies to height from
1O,0 900 feet to $4,000 feet. 1t is native
of South America and its habitat is
among the lofty mountains of that
country. It's power of flying to high
attitudes is only exceeded by the condor
of the Andes, which is said to have at
tanned the height of six miles, or within
one mile of the greatest height ever
attained by balloon.
The following method of making
paper transparent for copying drawings
is adopted by the Austrian photographic
bureau. The sheet of paper being
placed over the drawing to be copied, it
is lightly rubbed with ball of cotton
saturated with pure benzine. The
tracing can then be readily made, owing
to the transparency produced, and the
benzine, on evaporating, leaves the
paper Opaque as before, and perfectly
odorless. To secure satisfactory results,
however, absolutely pure benzine must
be used.
-Anthropologists all over the world
are said to be aroused by the PROPOSE
ton of Prof. Putnam, of Harvard, "a
gather at the worlds fair in Chicago
living representatives Of every race OF
aborigines to be found on the American
continent, in their own houses and cos
tunes. Should the proposal be carried
out students of man from all over the
world will flock to America for the
occasion and seize eagerly this only op
portunity ever offered. The cave
dwellers, whose mode of life Walt Me
Dougall treats with much historical
correctness in his recent fiction, will
then be either demonstrated as actually
existing or proved to have died out
n. Y. World.
The great robber of moisture on the
plains in the west is evaporation. The
activity of the winds is so great anC
constant that more vapor is raised from
exposed water surfaces than in many
. regions of greater heat. The annua
, evaporation is seldom if ever less thar
, four feet, and may rise to eight feet
Water storage upon high plains wher
there are no trees, if not wholly delu
sion, is held to be somewhat delusive
More hopeful is the expcdient of. dee
tillage, for, hidden from sun and wind
> in the loose soil and subsoil, the moist
ure will thus be preserved at the YER
spot where it is needed to sustain veg
citation