The Ohio Democrat. (Logan, O. [Ohio]) 1886-1906, 1892-05-14
SCIENCE AND INDUSTRY.

From the Gambia there are 10000
tons Of ground nuts annually exported,
mostly 10 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 2,G29, 900
pounds of wool In 1891, being 10, ,43O, 900
pounds more than in 1890. This colony
also exported 5,340 tons of frozen meat
in 1891, a gain Of 2,31s tons over 1890.
There were also shipments of I ,13O tons
of preserved meats
"A colonial butter factory at Berry,
n. $. w. received 81, 457 gallons of milk
in one month, yielding 81 ,253 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 inn
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 Il maxi
mum depth of seventy-fvc 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 70 per cent less wood.
"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 discobolcs. 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 a height from
10. 600 feet to $1,000 feet. 1t is a native
of South America and its habitat is
among the lofty mountains of that
country. Its 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. on within
one mile of the greatest height ever
attained by Il 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 a ball of cotton
saturated with pure benzine. The
tracing can then be readily made, owing
to the transparency produced, and the
benzine. on cyaporatirg, leaves the
paper opaque as before. and perfectly
odorless. To secure satisfactory results,
however, absolutely pure bcnzine must
be used.
-Anthropologists all over the world
are said to be aroused by the PROPOSE
ton of Prof. Putnam, of Harvard, to
gather at the worlds fair in Chicago
living representatives of every race of
aborigincS 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 win flock to America for the
occasion and seize eagerly this only OPP
portunity ever offered. The cave
dwellers. whose mode of life Walt Nc
Dougall treats with much historical
correctness in his recent fiction, will
then be either demonstrated as actually
existing or proved TO have died out
\. y. World.
The great robber of moisture on the
plains in the west is evaporation. The
activity of the winds is 50 great and
constant that more vapor is raised from
exposed water surfaces than in many
regions of greater heat. The annual
evaporation is seldom if ever less than
four feet, and may rise to eight feet.
Water storage upon high plains where
there are no trees, if not wholly Il delu-
sion. is held to be somewhat delusive.
More hopeful is the eXpedicnt of deep
tillage. for, hidden from sun and winds
in the loose soil and subsoil. the moist
ure will thus be preserved AT the very
spot where it is needed to sustain veg
OF t;nr