The Ohio Democrat. (Logan, O. [Ohio]) 1886-1906, 1894-03-31
SCIENCE AND INDUSTRY.

hour. and live in the air week at a
time, day and night, without touching
a roost.
Contracts for about $4,000 tons OF
rails are said to have been placed this
year, and there are inquiries in hand
s'for about 10000 tons, of which one
half are intended for roads west of the
Mississippi"
The aerial space within the limit
of our vision is calculated to have a
diameter of 420, 900, 600, 600 miles. and n
circumference of 1920, 742. 900, 600 miles.
And this is only fragment of the inn
mensity of space.
Solid air, Prof. Dewar's latest wor
derful achievement, is produced by
placing a tube of air--i. c., an empty
tube-insidc another full of liquid
oxygen, and boiling off the oxygen
under high vacuum. The intense
cold produced by the evaporation
brings down the air in the inner tube
as liquid and then in q solid or icy
form.
The total gold output of the colony
of Victoria, Australia, during last year
was TO7 36T ounces, of the value of
Il
ounces more than the yield in 1892 and
the largest since 1885, The gold eN-
port from Cape Colony, Africa, during
last year was 1,49O, 736 ounces, valued
at about s26, ,25O,000.
Neptune takes 165 years in making
its Journey around the sun, so that
more than century would have passed
away on our earth before it had COM
pleted one year. Neptune j3 so far
away from our earth that although it
is the third largest planet, we cannot
see it unless we look through tele-
scope.
"A few years ago u number of scien-
lists of New England made II calcula-
tion as to the amount of water given to
the atmosphere by the washington
Elm," Cambridge, Mass. They calcu-
lated that the leaves of that tree would
| cover over 200, 900 square feet of sur
face, and that they gave out every fair
day during the growing season 15,5Oo
pounds, or "a tons, of moisture.
| According to Bonfort's Wine and
Spirit Circular, Italy is the greatest
wine-producing country in the world,
'her annual production amounting on
an average to 8T5,000,000 gallons.
France and Spain come next, each with
about 1000. 600 gallons. The COM
bincd production of Austria and Hun
gary each year is some 215, 600. 900 gal
ions; that of Portugal, 1872, 900, 900; Rus
sia, T3, roo, 900; Greece, $1,000, 900; Rou.
mania, so, ,S0O,O 900; Germany, 81, .0O0
Bulgaria, 1866, ,O00 and Turkey, a.
SOC, 900.
| Depression in the locomotive build
ing industry in England is said to have
resulted in 92S fewer hands being en-
ployed in 1898 and 1861 fewer than in
| 1891. The st. James Gazette adds:
ut is probable that another thousand
will be dismissed next month, and the
prospects for 1894 are said to be poor.
The worst of it is that a good deal of
the falling off is in foreign orders. A
large part of the world used to get it's
locomotives from Great Britain. Now,
unhappily, it makes them at home or
gets them from America
A modern treatment for nervous
prostration requires that the patient
be put to bed in a quiet room and fed
for weeks on enormous quantities of
milk. He must take exercise, how
ever, and this he does by proxy through
the device of massage. He must do
absolutely nothing for himself, and if
his nose itches the nurse must scratch
it. Patients under such treatment
sometimes gain four or five pounds of
flesh per week. 1t is, of course. a
luxury for the rich.
The internal temperature of frees
has been investigated in Belgium by
NJ. w. Prinz, who finds that, as "a rule.
"A large tree is warmer than the air in
winter, and little colder than the air
in summer. The mean ANIMAL tenn
perature of tree is practically the
same as that of the surrounding air,
but the monthly means differ by sew
eral degrees. Heat changes are trans
mitted slowly to the heat OF a tree,
; the temperature of the interior differ
! ing sometimes as much as 80 degrees
from that of the air. When the air
: temperature is below freezing point
the temperature of the tree appears to
remain just above the freezing point of
J it's sap, snd in the hot days of summer
, the internal Temperature was not
known to vary more than 8 degrees
from 80 degrees.
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