The Pioche weekly record. [volume] (Pioche, Nev.) 1877-1900, 1885-05-30
POPULAR SCIENCE.

tAS IOul posltlul4 VI lAlN Alluid GeSu AZ
hand grenades is thus given by the
Western Druggist: Sodium hyposul.
phite and water of ammonia, Of each -four
ounces: water to sixteen ounces.
An English lock-maker has constructed
key which he claims is capable of open
ing %, 600 patent lever locks, all of which
differ in their wards or combinations. As
described, the key weighs three ounces,
and is nickel plated.
AS the result Of his personal observa-
tions, NJ. Claret states that the walking
Of insects may be represented by three
men in Indian file, the foremost and
hindermost Of whom keep step with each
other, while the middle one walks in the
alternate step. The walking of arach-
nids can be represented by four men in
file, the even numbered ones walking in
one step, while the odd.numbered ones
walk in the alternate step.
The proposal to establish a chain Of
lightships across the Atlantic is believed
feasible by the Scientific American. 1t
says that the experience with lightships
proves that vessel properly constructed
may be made to ride out the fercest
storms at anchor, save upon rare occa-
sions, and that the light steel cables OF
recent construction have been success
fully used to anchor ships in the deepest
waters "off soundings."
A new French apparatus called the
cylindrograph is designed to photograph
at single operation a wide sweep Of the
adjacent country. The instrument con-
6 oil 10
with small lens in the center, which
moves on an axis. The dark slide is of
some material which will bend, and when
a view is to be taken the lens is turned
upon the center from one side of the land
scape to the other. The panoramic pict-
ures thus secured are sufficiently good to
serve surveying, military and other pur-
poses.
1t is now believed that the denuda-
tons Of the land do not cover the sea-
floor further than 800 miles seward.
These deposits are four miles deep in
places. Far at sea its surface is covered
with very small "shell animals" There
is patch of them in the North Atlantic
1900 miles long and several hundred
miles wide. Their shells finally sink to
the bottom and form chalk. In the
great abysses of the ocean, however,
these shells dissolve before they reach
the bottom. Here the only addition to
the sea-foor is made of wrecks, iceberg
washings, dust carried by the wind,
pumice from volcanoes and meteoric
stones. The pumce has foated till it
became water.logged. The color of the
deep sea.hoor is red. The accretion is
infinitely slow Chicago Current.
A curiosity in the way of watches was
shown by T. Sordet, Director of the
Watchmakers' School at Geneva, before
the theological section of the Society OF
Arts. This wonder is nothing less than
watch with one wheel, still in running
order, manufactured at Paris, in the last
century by Mr.. Gautrin. The great
wheel which gives the watch its name
occupies the bottom of the case and the
center of the plate; it has 60 teeth and i:
SO nm. in diameter. Its axis carries
two pinions, one of which receives the
motive force from barrel, and the other
carries the minute work. The function
of this great wheel is quadruple First
it acts on lift, then on lever operating
on another destined to lower the axis OF
the watch, and lastly on third lever,
the latter serving to return power to the
great wheel at the moment when the
action relents by the rise Of the axis.
- Scientific American.