Chicago eagle. [volume] (Chicago, Ill.) 1889-19??, 1907-03-30
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A machine which threads q thou. |
sand needles a minute Ii at work In a |
Swiss factory. The purpose Of the
machine Is to thread needles that are
placed afterward In loom for max. |
Ing lace. The device Is almost entirely
automatic. 1t takes the needle, carries
II along, threads It. ties the knot, cuts
the thread of Uniform length, then
carries the needle across an open space, |
and places II In a rack. The work Of
threading these needles was formerly
done by hand.
When a submarine boat becomes dis
abled beneath the surface Of the water
and cannot rise Its crew ls in bad
pretllcament. TO remedy the difficulty
an inventor has contrlved an auxiliary
boat to be carried In the submarine and
to be a part Of It, practically, until
needed. In time Of accident the crew
Of the incapacitated submarine would
enter the little craft and when the con.
taining chamber had been flooded the
bolts would be withdrawn and the YES.
eel with It's human freight would clear
itself and rise to the surface.
German observers recorded as long
ago rs 1747 that luminous emanation
Of variable shape will appear In the
dark Mt points on the surface of the
earth below which there are extensive
ore deposits. Immediately before or
during a thunderstorm these phenom.
ena are said to be especially striking.
Similar observations have more re.
Gently been made in North Amer.
lea In the nelghborhOod Of ore dc.
pOsits. The electric emanation given
of from tire surface Of the earth has
been repeatedly ascertained photo
graphically.
A new theory Ia advanced by hard.
wood experts rs to why wood which
has been carefully kiln.dricd often
warps. 1t Il now believed that when
the sap Is dried out various foreign
substances other than turpentine. pitch.
etc. remain In more or less solid
| state. and when the wood II niOistcned
these substances absorb water. and,
swelling. cause warp:ng. A process Is
announced for removing the objection.
able substances. the inventor claiming
a piece Of oak NO treated can be soaked
In water all night without swelling
perceptibly.
Sir william Crookcs has discovered
how to get nitric acid from the air but
the discovery has long been looked for.
II have before me-" writes a CORE.
spondent of the London Chronicle. ~
manual Of chemistry In which I find
a culogy Of nitrogen ana It's compounds.
/ such as nitric acid and the so-called
compound ammonins. Whoever says
| the inspired chemist. succeeds In pro.
ducing those bodies In abundance from
the nitrogen Of the atmosphere without
the use Of organic materials will not
only amass II princely fortune but must
rank as one Of the greatest bencfac.
| tors Of the human race. inasmuch ns
such discovery would open up mn al.
most infinite supply Of matter for the
fertilization OF the land"
The fOndncss Of cats for catnIp IL
well known. but II seems. from rc.
cent experiment at the Arnold Arborc.
tun,. In Boston, that cats have other
favorite plants. AMI more than that,
are pretty good botanical investigators
for their own purposes. A few plants
u q new vine from China were set out
In the greenhouse. Presently II was
found that some animal was eating
their tender shoots. The deprcdator
turned out to be the dollhouse cat. This
was, perhaps. regarded rs only TEN,
p0rary alteration OF that particular
cats appetite. for In the spring lOC
small vines Of the same plant were SCI
out In cold frame. But the cats OF
the ncighbOrhOOd iiocked there ana de-
stroyed the entire bed, eating the
plants clean 10 the ground. 1t has
become necessary to protect these vines
by wire MEETINGS against the inroads OF
cats An interesting question Is, How
did these American cats find out that
this Chinese plant was good to eat
And how was the news Of the presence
of this new dellcacy SO rapidly spread
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