The Red Cloud chief., 1902-11-28
MISCELLANY


time But it is int oducing Us to un'
known regions, and NJ. Louis Bout IN,
who began by investigating the animal
life of the waters, has become an en-
thusiastic sea. bottom chemist Some
of his remarkable photog arhs of sub
marine scenery have b on recently
published He uses a camera which
is enclosed in "A tight copper box hay
ing a plate glass window. and is mount
ed on n cast iron tripod Suitable
mechani.m is proyid Il TO expose and
change the plates. The pressu G of
the water, inconviently great even
a 90 or 30 feet, was an early diff rulty,
but his was c1nCetiated DO means OF
rubber ball, holding ahout II gallon,
from which air was forced through II
tube into the box rs the pressure in
creased. ght fades away rapidly in
sinking be ow the surface, daylight eX.
posurcs being impracticablc at "a depth
of % feet Magnesium powder is
burned in oxygen IN IA suitabl glass
globe, and by this powerful iilumioa-
ton instantaneous exposures are made
with interesting results.
49,
The biological stat ons of the New
England c)act have solved the problem
of lobster culture. Several tn usand
of the young fry are put int n c, lin
driral scrim bag about three + ct in
diameter ami four feet deep, and he
water in the submerged bag is con
stantly agitntcd by a dashcr driven 10y
gasoline eug ne. This prevents the
fry smothcring or devon ing one an
other, at the same time keeping their
food OF soft clIm fragments within
reach In nirc to sixteen days from
the eggs the creatures are able to take
care of themselves, this stage being
reached by III TO moro than 10 per cent
of the fry, although no previous cXper.
iment had even one per cent of sur
vivors.
~
That certain substances adhere so
tenaciously to glass as to bring away
scales was observed long ago by Prof
Cailletet. For etching lac applies two
coats of thin glue, and after twenty.
four hours place the article on IA kitch
= en- range at not over l06o Fahrenheit
Theglne wi | detach itself wi h numer.
Gus flakes d gAss/ The designs may
be varied by adding various salts, the
best results being had from glue con
tanning alum
The electric target of Capt. Charles
Chevallier, of the French army, is a
series of metal segments When "a pro.
jectile strikes a segment, an electric
circuit is completed by one or more
spring-supported rods at the back, and
the exact spot struck is ~signalled upon
an annunciator.
~
. About fifty earthquakes yearly dis
turb the world throughout its mass
Prof. John Milne notes that between
January |, 1899, aud Janu,ry l, 1902,
the world shaking earthquakes nun.
bered 1876. of which twenty-five origin.
ated wesr and south of Alaska, four.
teen west of Central America, sixteen
west of Anti es. twelve west of the
Andes, twenty nine east of North
Japan, 70 ty.one south and east of
Java, seventeen no,th of Maritius.
twenty two on the east side and three
on the west of the North Atlantic,
tb.,nn Il, th, Mouth Ntln.tt. ,,I g,,,.
teen in the Balkan, Caucasian and
Himalayau regions These sources
all submarine but the t%hree-are neal
the base of the steepest ~fleXures, with
canic peaks. Both on land and under
sea, the great earthquakes seem to at
tend II deepening of the burrows and
an elevation Of the thanking ridges:
and elevation NAV reopen long sealed
volcanoes, rs in the eruptions in the
Antilles in 1898, his, 1865, 1897, 1902,
1872, 1895, and 1909 The small earth.
quakos-of which 10000 IA year are re-
corded-have no sensible connection
with volcanoes.
Tho new image transmittn appar.
aus of a Belgian engineer includes
two synchronous motors, each the size
of an egg,w which are mounted at the
two stations, and are driven by tho
same current at the same speed of SOC
revolutions n second. On each arma-
ture is IA small lens which in every 80
revolutions oscillates five degrees from
the axis. The transmitting lens thus
''sees" over "A circle of ten degrees, and
the variations of light and shade in
the spiral path are instantly trans
mitted through a selenium eel to the
same points on the receiver and arc
thrown on IA screen by the second lens.
The entire spiral being passed ten
times IA second, the image on the