Freeland tribune. (Freeland, Pa.) 1888-1921, 1902-09-01

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An alloy of aluminium is now used
as a substitute for copper in making
! nails and tacks. 1t is considerably
cheaper and is not injured by exposure
to moisture, heat or cold.
Three provinces OF Germany have
one-third of their area in forests. or
the entire area of the kingdom 7.3 per
cent. is occupied by forests of decidu'
Gus trees and 1914 per cent. by those of
the pine family.
Since 1898 earthquakes in Austria
have been recorded by instruments in
stalled under the direction of Gov
ernment commission. In 1898, 2O9
shocks (mostly smalD were noted; in
1893, 100, and in 1900, 1G9. Reports
are regularly received from large
number of volunteer observers, and
several complete seismologician Obser-
vatories are maintained.
The first completely equipped motor
fishing boat, says the Scientific Ameri-
can, has recently made her trial trip
most satisfactorily at Lowestoft. This
is the first fishing craft which will rely
upon petrol to generate the force re-
uuired for all purposeS-hauling her
nets, hosting sails, working the caps
30 al In, irs he, Tho motor
is of twenty-four horse power, and is
fitted in case four feet by two and
half feet 1t is only three feet high,
and the top cover serves for a table.
The motor is OF the threecylinder, two
cycle type, and self-starting and revers-
ing.
The radium discovered by NJ Curie
is so called because it permanently
sends out radiations similar in charac-
ter to the cathode and TO the X-rays.
The radations penetrate substances
opaque to ordinary light rays. Thus
metallic screen held between the eye
and a vial containing radium does not
prevent the healthy eye from seeing.
IL Tile IpllIld VI IL DlIht DtISbii 10
healthy it will be affected by radium
rays, even though the cornea be Opaque
to light rays. Hence the radiations
from radium may be used to discover
whether or no the retina of a blind
person is healthy and as an aid in dag
nosis.
In paper lately read before the Phi
losophical Society of Washington Mr..
Bobrick said that by the regenerative
system a pound of liquid air can be
produced from the consumption of each
pound of coal. This cost is prohibtiye
for ordinary use in producing power,
but where expense is not considered
liquid air is an ideal source. Mr.. Bob
rick said that with seventeen gallons
of it he can drive his automobile be-
tween fifty and sixty miles. He thinks
that it will never be used for station
airy engines, but may be in submarine
and aerial navigation. Insulated car
riers are now made in whuch gallon
of it may be preserved for about
month.
The production of hydraulic cement
in the United States during the year
ending June 30, 1901, according to Il
bulletin just issued by the United
States Geological Survey reached the
enormous total of 20,067,73 barrels.
OF this total 12,711, ,225 barrels We're
Portland cement, 1904, ,S23 barrels We're
natural cement and 272,6S9 barrels
were slug cement. The corresponding
figures for the preceding twelve months
were: Portland cement, S4S2,020 bar
rels; natural cement, S,3S3, 600 barrels.
and slug cement, 365,641 barrels. 1t
will be seen that during the year end
ing June 30, 1900, the production of
Portland cement increased almost fifty
per cent, while the production of both
natural and slug cements decreased.
Domestic cements now supply over
ninety per cent of the total consump-
ton of the United States.