The Ohio Democrat. (Logan, O. [Ohio]) 1886-1906, 1892-06-25
SCIENCE AND lNpUsrRY,

1t is announced that the Baltimore
sugar refinery, which has been closed
for some time, is to be enlarged TO n ca
pacity of 800 barrels of refined sugar
per day, and be put in operation again
by July 1.
The minimum age of employment
on the continent is generally twelve, or
from twelve to fourteen. But then En-
glish children only work twenty-eight
hours per week, while in France and
Germany the hours are thirty-six, in Italy
and Germany forty-eight in Holland
sixty-six, and in Belgium seventy-two.
The wheat crop of New South Wales
yielded 13 bushels per acre, rather less
than the average of the past 80 years.
The total area cropped was ,265
acres, as against 1913, ,293 last year Re
quirements are 1880, 900 bushels, exclu-
sive of seed, consequently, over 5000, 900
bushels must be imported.
The great Alta irrigation district
system of canals has been completed in
California, and is running full of water,
practically irrigating one hundred and
thirty thousand acres of land. Five hum
dred miles of canals and distributing
ulJcnes are in operation.
There are no great woolen factories
in Egypt, but the looms are scattered
In small numbers over the country.
According to Mr.. Felix Mengin, in his
"EIistoire Sommairc de rEgypte. 1923
49, published in 1899, there were in
Egypt, in 1888, 1000 looms for weaving
woolen stuffs. These stuffs were used
10 dress the fellahs and the sailors and
for bed covers, etc. The coarse wools
OF Upper Egypt were chiefly used for
those purposes, not being suitable for
any other se.-Pittsburgh Dispatch.
When increased work is thrown
upon the heart during active muscular
eXertion, endurance of fatigue is limited
mainly by the limited power of the
heart to continue supplying the in
creased amount of blood which is re-
quired by the acting voluntary muscles.
LuXuries which are forbidden or limited
in training" and which are known to
hinder prolonged excrtion, such as
water. alcohol. tobacco, directly weaken
the force of the hearts contractions,
an" 80 weaken the hearts power to-
send blood to working muscles.
"A recent test of brick made by the
dry clay process at Watertown arsenal,
according to Paving, showed an aver
age compressive strength of 3,973
pounds per square inch. In one in
stance it reached 1913 pounds per
square inch. A test was made at the
same place on fancy pressed brick"
The first crack developed at a pressure
of sos, 600 pounds and the brick crushed
Mt IL. N I
square inch. This indicates almost as
great comprcssive strength as granite
raving blocks, which is from l. 900 to
2O,0 900 pounds per square inch.
"A German inventor has devised a
means of producing light superior in
strength to either oil on electricity. 1t
is by means of air driven through
pumice-stOne, the latter having been
impregnated with benzine. The ben
zine gas thus obtained is then carried
through a fine magnesium powder, and
proceeds upward through pipe to be
consumed in small flame of "a claimed
100000 candle-power. The apparatus
consists of blast engine for driving
the air through the pumice, and num-
ber of other accessories all of which
take up but a small space.-English
Mechanic.
The horse power of whale has
been ma lie a subject of study by the
eminent anatomist, Sir William Turner,
of the University of Edinburg, Scotland,
in conjunction with the equally eminent
Glasgow shipbuilder, Mr.. John Hender-
son. The size and dimension of great
tinner stranded several years ago on the
shore at Longriddy furnished the neces-
sary data for computation of the
power necessary to propel 1t at speed
of twelve miles an hour. This whale
measured eighty rect in length, twenty
feet across ut the tlanges of the tail, and
weighed seventyfour tons. To attain
a speed of twelve miles per hour it was
calculated that one hundred and forty
five horse power was necessary.
Eastern farmers, who have album
dant supplies of water for crops and
every other purpose, by rainfall and
springs and rivers. know little OF what
the problem of a water supply means to
the farmers in the dry belts and arid
regions of the west Some idea of the
.abor involved in securing water for
irrigation may be gathered from the fol-
lowing figures of the four largest dams
completed last year: The Walnut Grove
dam, near Prescott, Ariz., l10 feet high,
inclosing $50 acres, and having q capa-
city of 1000, 100000 gallons the Merced
dam, in central California, one mile
long, 60 feet high, incloSing $50 acres,
and storing $500, ,OOO,O 900 gallons; the
Sweetwatcr river dam, near San Diego,
Cal. 90 feet high, 725 acres, storage ca
pacity 5000, 100000 gallons, and the
Bear Valley dam, in San Bernarlino
county, Cal, TO feet high, inclosing
2,25O acres, and holding 10000, 900, 900
gallons of watcr.---N. y. sun.