The Abbeville press and banner. [volume] (Abbeville, S.C.) 1869-1924, 1891-05-27
POPULAR SCIENCE.
It is said the coming man is going to
be hairless and tcothless.

It is said the coming man is going to
be hairless and tcothless.
Examination by microscope has de.
monstrated that sponges have life.
Dependency associated with bodily
ailment is the origin of by far the largest
portion of suicides.
OF 3O5 weather forecasts issued in
South Australia in 1890, 250 were veri.
fed and forty were partially verified.
A submarine gun has been successfully
tried in the Lake of Como, Italy, to dis.
charge at depth of 100 yards, causing
boat to capsize.
NJ. Olszewski, a Polish scientist, has
made the discovery that the color of
lique6ed oxygen is bright blue, resem.
bling that of the sky.
A Partisan camerist has devised o
method of taking panoramic views by
causing the camera to revolve on an axis
so that the sensitive paper may "take inn
the horizon.
DR.. Fisher, of Breslau. Germany, is
said to have succeeded in photograph
ing by their own light, luminous bac-
terra, such as sometimes abound in de-
composing fish.
1t is said that the Rhododendron
Catawbiense has escaped from gardens in
Nova Scotia, and is spreading itself by
its seeds ovec the moist rocks in the
woodlands there.
Kew Observatory, England, is about
to undertake the testing of Photographic
lenses, as it has for many years done that
of telescopes, sexatants, serveying in
struments and chronometers.
The roe deer is the smallest and most
nearly domesticated of the three species
which inhabit Germany. 1t is likewise
the most beautiful, and Its flesh is the
daintiest venison known to the epicure.
Gum chewers' crampi is new addition
to the types of disease produced by the
frequent use of single group of mus
cles. It is a muscular incoordination
similar to writer's, telegraphers, milk
maids and cigar makers cramp.
French scientists are puzzling over a
spider which was discovered in cavity
il stone. It is estimated that the stcne
must be at least 1000 years old; this,
notwithstanding, however, the spider is
quite lively and very youthful in its
antics. It lis blind and has no mouth.
A new pianoforte keyboard having six
rows of keys has recently been exhibited
in Manchester, England. An octave is
formed by Six keys in two contiguous
rows. All the keys are on the same
level, and each note is separated from
the next by an interval of two semi
tones.
The danger from alternating currents
is found by Professor Elihu Thomson tc
diminish as the rapidity of the alterna.
tions is increased. 1t took twenty times
as strong a current to kill dog when
the alterations were 450O per second,
and twice as long when they were 300
per second as when 12O per second.
Certain anima.s have teeth which
grow during all their lives. The rat and
the squirrel are examples of this. Our
own teeth are developed from pulps,
which are absorbed and disappear after
the teeth are grown, but in rats tooth
the pulp is perpetual, and is continually
sccreting material by which the incisol
gains length. Therefore the animal is
obliged to gnaw all the time to keep
the tooth ground down to the proper
length. 1t is commonly imagined that
the rats keep gnawing from pure cussed.
ness, but such is not the case.