Iuka reporter. (Iuka, Miss.) 1888-1894, 1889-05-30
SCIENTIFIC AND INDUSTRIAL.

In experiments during the past year,
celluloid has proven an excellent sheath
ing for ships, in place of copper, over
which it has some advantages.
A new tanning agent has been OBJ
tanned by digesting coal dust with caus-
tic soda at boil, and neutralizing the
resulting liquor with hydrochloric acid.
A solution composed of alum, two
pounds; water, sixty pounds blue vitriol,
two pounds; gelatine, one pound; ace
tate of lead, half pound, thoroughly
mixed, will prevent mildew from affect
ing wood. clothing, fabrics, etc.
A remarkable engineering feat has
been successfully accomplished at Co
kak, India, where the $50 horsepower
of three turbines is transmitted by rope
gearing 739 feet away, the first 800 feet
being up the face of a perpendicular
cliff.
A non-speaking telephone is exhibited
in Pittsburgh A sensitive plate presses
against the larynx and glands of the
neck, and as the jaws are moved in con-
versation the motion sends the words
along the wire as distinctly as the tele-
phone now in use.
According to the Electrical Reoieso
medicine may be introduced into the
human system by electricity. The cleo
trodes of battery are saturated with the
medicine and applied locally to the skin.
Experiments show that there is an act
ual absorption of the medicine into the
system.
A vehicle wheel has been patened by
Mr.. Waiter Knight, OF San Andreas,
Cal. 1t has double series of inclined
metal spokes, the wheel being made of
combination of wood and metal whereby
great simplicity, durability, and strength
are secured and the wheel may be easily
repaired when required.
According to Mr.. E. G.. Ravenstein
the English foot is used as the standard
of length by countries having 46l, 000,-
coo inhabitants, the meter by BAT, 091,-
900 people, and the Castilian foot by
5, 905, 600. Denmark and Russia are the
only countries in Continental Europe
which have not adopted the meter.
A tricycle. which is designed to be
easily and conveniently propelled at a
high rate of speed without much excr-
ton on the part of the operator has been
patented. 1t consists of a rocking chair
located on suitable frame and operat-
ing at its free end on a segmental gear
wheel, come ted by train of gear
wheels with the axle of driving wheel
Curious effects are known to be often
produced by colors on persons and ami
mails. The sight of an obnoxious color
may induce an attack OF Mysteries, nausea.
or headache, or it may cause violent
fit of ill-temper, The offending color is
sometimes blue, sometimes yellow, but
oflener red or scarlet. Scientific atten-
ton is being directed to these phenom-
ena.
Several of the French railway compa-
MES and other public bodies have resolved
to have their printing done on green in
stead of white paper. The reason of the
change is that they believe the combina-
ton of white paper with black charac-
tie endangers the eyesight of their work
people. Black on green has ALWAYS been
recognized as good combination, and
many railway tickets are so printed.
Investigations concerning the effects
of different forms of artificial illumina-
tion on the health have shown that the
tallow candle is the most unwholesome
agent aud the electric the best. The in
candescent electric light produces only
about /. 30 as much heat as the tallow
candle, while it gives out no carbonic
acid or water, One gas Jet in room is
said to vitiate the air as much as six per
cnra