The mirror. (Stillwater, Minn.) 1894-1925, 1896-08-20

nOU ldll OIL Uu0lI poICu ID UcCdUoO
they cannot open the foot when
the leg is bent. Look at hen
walking, and you will see it close
its toes as it raises the foot, and
open them as it touches the ground.
A new industry which is receiv-
ing encouragement in Germany is
that Of distilling strong aromatic
oil from the green leaves of the
celery plant. A hundred pounds
of leaves make one pound Of oil.
The oil is used for havoring pur-
poses
The camels foot is soft cush-
ion, peculiarly we'll adapted to the
stones and gravel over which it is
constantly walking. During sim
gle journey through the Sahara
horses have worn out three sets OF
shoes, while the cancels feet are
not even sore.
A case of complete and imme-
diate relief from the effects Of ivy
poisoning is reported in the Med
ical World by Dr. w. L. Shanks.
His patient was swollen from head
to foot, and in an hour after bath
ing in a solution of sodium hypo-
sulphite was attending to business
as if nothing had happened.
Experiments have shown that
fatigue causes chemical change in
the blood, resulting in the pro-
duction Of a poison resembling
the curare poison, which certain
savage tribes use for arrows. Ar
row poison, however, is Of vegeta-
BILE origin. When the blood of a
tired animal is injected into the
arteries of a fresh one, the latter
exhibits all the symptoms of ia
tigue.
Science states that the extended
use Of small pilot balloons would
result in giving us much valuable
information AS to the currents
in and around clouds. These bal
looms, which are cheap, reach con-
siderable attitudes, and are espe-
cially useful in indicating the drift
of the currents when there are
no clouds in the sky, the direction
of the lower currents when only
the upper currents are visible etc.
Observations made by NJ Per-
rotin on Mount Mounier, at an ell
ovation of about nine thousand
feet above the sea, have convinced
him that the period of the rotation
of the planet Venus is equal to
that Of her revolution round the
sun, the time of both being two
hundred and twenty-five days or
less. The observations were car
ried out in December Of last year,
and in February, 1896.
One volume of petroleum vapor
renders $50 volumes of air explo-
sive and 1850 volumes inhamma-
BILE. A red-hot piece of metal.
Give" coal or spark from steel or
flint will not ignite an explosive
atmosphere of petroleum vapor;
but white-hot metal, flame or an
electric spark will readily do so.
Naptha at 70 degrees Fahrenheit
evaporates at the rate of about six
pounds per square foot exposed
per hour.
Infammable gas that will read
lily ignite by the application of
match is often found in the hol-
lowed trunks of old trees. Some
remarkable stories Of gas trees
have recently appeared in the pub
lie prints, and explanations offered,
that it is the ooze of natural gas
from the reservoirs in the earth,
penetrating these old tree trunks
up through the ground. A recent
author shows that this is fallacious.
Infammable gas really does exist
In many old trees. but it is of the
trees own manufacture from it's
own carbon and hydrogen
Mr.. Wilmer Stone refuses to &C
cept the idea Of Gatke that feath-
ers can actually change their color
without moulting, unless they are
bleached or worn off. He also con-
cludes that the annual moulting
at the end Of the breeding season
is physiological necessity and is
common to all birds; whereas the
spring moult and striking changes
of plumage effected by abrasion
are not physiological necessities,
but depend in extent upon the
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