Camas Prairie chronicle. [volume] (Cottonwood, Idaho) 1901-1917, 1906-01-19
PoPuleT aience'
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l0Oltowns In France. The gas ia
mae from calcium carbide In 1908
the consumption of the latter was
1850 tons.
TIE power generated in a modern
steamship la single voyage across
the Atlantic is mere than enough to
raise from the Nile and set in place
every stone of one of the great Egyp-
tan pyramids.
Aluminium is a difficult metal to
tool, as it clogs the cutter. 1t also
showi a tendency to split and check |
on bending. Some Of its alloys, as
that with magnesium and called
"maglalium," are said to be easily
workable.
A new type Of submarine torpedo
boat \ undergoing tests in England.
The boat is only "a feet long by feet
8 inches in diameter, and can be car
ried OF the deck of a battleship, and
launched when it is desired to bring
1t Into action. 1t has a speed, when
submerged, of eight knots. carries two
torpedo tubes, and is navigated by a
crew Of three men.
The government Of Ontario is ex-
pected to announce shortly a definite
plan Of forest preservation, the ult-
mate outcome of which will be a for
est reserve of 4O,OOO,OOO acres, yield.
ing yearly revenue of at least $780,.
100000. Under the proposed plan,
which applies only to lands not suit
able for agriculture, the timber is to
be sold only as it comes to maturity,
and the trees that have attained prop
er size must be marked by govern
ment employees before they can be cut.
One cubic foot OF dry air at ordi-
nary temperature and pressure weighs
about .g74 h., or 1.1S o.. Some Of the
high efficiency fans throw over $685.
600 cubic feet OF air / minute. This
means a volume eQualte a cube over
SO feet ON a side, and an actual
weight Of more than II tons. The
weight is not striking, but the vol
anne required to gather this, together
/ with the friction and the heat Of
) compression, all cOmpriAe a mechan-
} ical condensation of great signih,
} eance.
!. Reflected solar heat is used to oh
tain very high temperatures In a new
furnace designed by French invent
or. With it he expects to obtain {
temperature of $500 degrees G.
which is higher than that Of the cleo
tric furnace. The reflector is built uy
of more than 5000 mirrors arranged
side by side in parallel rows, eacl
measuring about 4x5 inches. Tn,
width at the top is 80 feet, at the has
1S feet and the depth 80 feet Witt
a previous and much smaller furnace
constructed on similar lines, a temper
AZURE of 1900 degrees c. was oh
tanned.
Geographers representing the prin
cipal nations are at work upon a MAJ
of the entire earth on a scale tf t
100000, and Professor PencA tn
German geographer, reports that
sheets out Of 437 planned had bee
completed up to March last. on thi
map the United States will cover a
area nearly 16 feet long. A disane
of one mile will be represented ty
space about One-sixteenth of an nc
long. There are, Of course, man
maps Of small areas on a much large
scale than this, but to represent th
whole face Of the known world o
. this scale IL an undertaking of niue
. interest.
The 60-ton steel car has now be-
\ In use about eight years and II wOuI
appear that 80 tons are the limit {
/ capacity. This iS not likely to be il
creased in the near future except Il
= special purposes in a narrow territOr.
There are two principal reasons Il
this, which were pointed out by G.
IA Beley in A recent address at PuFdU
'. University, The FIRST is because ID
= weight on the adjacent trucks Of tW
a loaded 6O-tOn cars, when coupled, pr,
5 duces a wheel load on track an
IL bridges which Is equal to that Of
I, very heavy locomotive. The secOn
lie reason is that castIrOn wheels hay
4 about reached their safe limit {
# strength in carrying 50-tOn cars. 1t
IN not advisable to increase the numb'
.. Of wheels under a freight car, and I
II substitute has been developed whiC
can be produced at a reasonable cos
YooT-I0.- AFtor tbe Pre.aut-