The Bossier banner., 1889-08-22
SCIENCE AND INDUSTRY.

The discovery of the cellular
structure of plants is credited to the
naturalists of the seventeenth century.
White lead is manufactured by the
new Hannay method direct from the
ore in the space of a few hours, while
by the old process it was matter Of
several months.
The French chemist who discov.
cred oleomargarine has now invented
a process for treating steel by which
steel bronze aud bell metal can be-
made at fabulously low prices.
"A cigarette-smoking boy will not
make a strong man. He will have i'm
paired digestion, small and poor mus
cles, irritable temper, and a lack of
capacity for sustained efforts of any
kind.-Dr. Bartholow.
"A mechanician of Danzig has CON
structed hand fog-horn that may be
heard ten miles. With a second horn
OF lower pitch to mark the divisions
between letters, whole sentences. can
be clearly transmitted by the Morse or
other code of signals.
Mr.. Edison says: "Undoubtedly
the next great discovery will be soma
method of getting electricity from coal
direct without the intervention of
boilers to make steam, steam-driven
engines to run dynamos, which in their
turn, with the intervention. OF magnet
ism, do work, whether in operating
motors or in making light"
The Queen of Italy has re-estab-
lished the manufacture of Burano lace
The industry had almost wholly died
out. The Queen found an old woman
who knew the stitch, and had her
teach number of younger women.
The result is that Burano lace has
again become a source ofIarge revenue
to the people of Burano.
-Petrole is the name given to man
ufactured substitute for coal, made by
firm in Minneapolis. and is the direct
outcome of the scarcity of fuel which
has retarded the birth OF manufacture
ing industries in that city and in fact
the whole Northwest. It is made from
saw-dust, the residuum of crude petro-
leum, and number of other ingredi-
ents which are not made known by the
inventors.
The walnut that grows in Persia,
Asia Minor, and Circassia, makes the
costliest of all cabinet woods. The
veneers are cut to one hundred and
twentieth of an inch in thickness, and
sometimes as thin as IT'S to an inch.
The veneers used on furniture are some
what thicker; the thinner ones being
used on picture frames and covering
for walls, after being backed with
strong, tough paper.
-Algarobilla is tanning material
that is used in the Argentine Republic,
South America, and gives satisfactory
results. English tanners have expert
mented with Algarobilla and some of
them employ it to-day in their tanner
les in England. tits very rich in tannin.
The pods of this plant contain forty to
sixty per cent. of tannin, and are gath
cred before becoming quite ripe II
this is neglected, the tannin. which is
a yellow powder, would be lost.
One of the difficulties of cotton
spinning, an exchange says, is a lack
of moisture in the atmosphere; but that
has now been overcome in some meas.
ure by the invention of a ''fog ma
chine" which generates what at first
glance appears to be steam, but which
is really spray of water separated
into SO fine mist that it has the ap-
pearance of one of natures fogs. BY
the use of this spray the temperature
of spinning room can be lowered to
the right degree, and the humidity,
which is the more important consider
alton, regulated to a nicely.