The Cheyenne daily leader. [volume] (Cheyenne, Wyo.) 1870-1884, 1880-06-27
SCIENTIFIC MIscELLAxY

SCIENTIFIC MISCELLANY.
Compiled lor the Leader.
Late experiments have shown
slightly increased tenaeity In iron xhel
magnetized.
The oldest working scientist In In
world is AZ. Cheyreul of Paris, who. Il
his n~inety-lfth year, has just com
menced a course Of lectures on chem
istry.
Another severe outbreak Of scarlet
fever. which occurred near Manchester
England, has been traced by the health
officers TO the distribution OF the infec.
tion through the milk supply.
In 522 cases OF damage to buildings
by lightning Our were found In which
rods were used 10 carry on the electric
iuid. An investigation OF the -four
cases by a scientific expert has shown
the conductors to have been in every
case faulty.
The finding Of n petri6ed shark al
the Ia Panza gold diggings, Cal, il
reported. Its weight is about two
hundred pounds, and its original length
was about eight feet A petri6ed whale,
some forty feet in length, Is imbedded
in the earth In the same locality.
Some experiments with reference tc
the spontaneous combustion OF variou,
materials, such rs wadding. raw fax,
hemp, sponge. wood dust, and thu
waste Of silk, wool and cotton spinning,
appear to demonstrate the important
fact that small quantities really take
fire sooner than large ones
A naturalist in Brazil tells Of an ex.
petition he made to one OF the islands
Of the Amazon to shoot spoon-bills,
ibises, and other birds. His design was
completely banied by q wretched little
sandpiper that preceded him, continu'
ally uttering his teil-tale cry. which al
once aroused all the birds within hear
ing Throughout the day did this indi
vidual bird continue his sell. imposed
duty Of sentinel to others, ~effectually
preventing the approach OF the fowler
to the game, and yet managing TO keeI
out Of the range Of his gun.
During an earthquake In 1919, al
area OF two thousand square miles
about the delta Of the Indus became
an inland sea; and the fort and the
village Of Sindree sunk until the tops OF
the houses were just above the water.
Five and n half miles from Sindree,
parallel with the sunken territory, a
region fifty miles long and ten miles
broad was elevated above the delta. In
reference TO its origin the natives cal
this the Mound OF God. In 1888, the
fort OF Sindree was still half buried In
the sea; and during an earthquake in
1915 the Sindree lake was turned int
a salt marsh.
Some time since a manufacturer had
occasion to construct n machine fol
cutting bars of cold hardened steel. Fol
this purpose he mounted n disc made OF
soft wrought iron upon n horizontal
axis, so rs to be rotated with great We.
locity. With n moderate speed no cut
ting was produced. But on causing
the periphery Of the disc to move ut the
rate Of about $4,000 feet per minute the
steel was rapidly cut by the soft iron.
Sparks were thrown off in q state OF
fusion, and became welded together rs
they foil, although both the disc and
the steel bar were but very slightly
heated.
DIR. A~bercrombie relates that a gen.
tleman who had been a soldier dreamed
that he heard a signal-gun, saw the
proceedings for displaying the signals,
heard the hustle Of the streets, the as
sembling Of troops, etc. Just then he
was aroused by his wife, who had
dreamed precisely the same dream,
with the addition that she saw the enc
my land and a friend of her husband
killed, when she awoke In a fright.
This occurred at Edinburgh at q time
when u French invasion was feared,
and it had been decided to fire q signal.
gun at the first appearance Of the foe.
The dream was caused, It appears, by
the fall Of q pair Of tongs in the room
above; and the excited state of the pub.
lie mind was quite sufficient to account
for both dreams turning or the same
subject.
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