The Abbeville press and banner. [volume] (Abbeville, S.C.) 1869-1924, 1891-10-14
POPULAR SCIENCk

The population Of the earth doubles
itself in 200 years.
Salmon, pike and goldfish are said tn
be the only fish that never sleep. s.
A thunderstorm in hot weather travels
at the average rate of thirty miles an
hour. ...- - st.sf ~
Each of the four cables upon which
the Brooklyn Bridge rests has capacity
of $4,000 tons.
A French electrician puts out 160
type written words minute over q SIM
gle wire-the capacity of his improved
method Of telegrsphy. 81
Dentists have discovered that tartar, y
calcareous deposit on the teeth is moro
abundant in persons of highly nervous
temperament than in any Others. ,.ss
4 company has been formed in 0hi0
to pipe Lake Erie water through to Gin
cinnati, taking in the most importannt
cities and towns along the route.
Many of the Pittsburg glass comps-
nies are placing plants in position TO
make gas, the natural-gas supply having
given out. The object is to avoid going
back to solid fuel. ...- 4.
instantaneous photography has bean
used to record the movements of the lipa
in speaking, and by putting the photo
graphs ia q zcetrope deaf mute can
easily read the words. ST.
The shell of an oyster In its native
habitat is always little open, and NH
croscopic, W aving hairs set up current1
which carry the food plants to its mouth,
where they are engulfed and afterwards
digested.
A careful examination of the aqueous
humor of the eyes of cattle will deter
mine whether they are, suffering from
tubercle or not. The bacilL will be +
found there in all cases where the dis-
ease exists.
A disinfecta1t which combines cheap
ness with general worth is found in per-
manganate of potash. One ounce VIII
make bucketful of disinfectant. Itisil
crystal, and can be kept in this state
, until ready for use.
Alachua Lake, a sheet of water IN
Georgia, almost fifteen miles in length
has run completely dry, leaving thousands
of dead fish and inert alligators on tha.
banks. This is the second time sinc8s
1928 that this phenomenon has occurred.
There is less dew on cloudy night
because clouds prevent the earth from
| 1bs ~ fha ~ hao<sl
as these pass over the earth fand turn
them back, thus preserving the equality
of atmosphere between the earth and tha
dir.
Oxygen is gas whose presence II
necessary before the phenomenon Of
burning can take place, and hydrogen il
gas that burns with pale blue flame,
and yet the combination of these two
gases forms water, which is the opposing
element of fire.
An examination of mussels has shown
that when poisonous they invariably have
enlarged livers and brittle shells. fu-
vestigation of the manner in which they
were obtained points to the fact that
museels which are taken from watsnss
which contain sewage matter are most
likely to be poisonous. II
The new departure in photography, -:
recently applied to telescopes, has ex-:s3
tended our information to wonderful
degree already, especially in the delinea-
ton of the moons surface, and has opened
wide field for astronomers. Many
points are cleary shown on the NEGATIVES;
which cannot be seen with the human
eye even when using the powerful Lick
telescope. q
Besides the large planets, Mercurys
Venus, the Earth, Mars, Jupiter, Saturn,
Uranus and Neptune, there are probably
thousands of others revolving around the.
Sun in orbits between those of Mars and
Jupiter. Up to date over two hundred
and fifty have been discovered and cata-S
logued. Vesta, Ceres, Pallas and juno
are among the more important OF Them
the aforementioned being, under favor
J able circumstances, visible to the naked
eye.
A new scientific instrument has been
gotten up by Professor Bigeiow, whieh
is called the aurora.in inclinometor. By
extensive researches he has found that
the same law which underlies the work
ing of electricity and magnetism IS
operating on the sun, and that sun-e earth
rotates as does the armature of q dynamo.
The instrument will be sent to Alaska,
where it will be used in the study OF tha
aurora, and it is there seen in the best
conditions.