The Bossier banner. [volume] (Bellevue, Bossier Parish, La.) 1859-1952, 1881-04-07
SCIENCE AND INDUSTRY.

3 Prof. Bouchardat attributes to the
vine powerful sanitary properties. He
asserts that wherever it is cultivated to
any considerable extent there is very
sensible diminution of intermittents.
The virtue is attributed to the action of
the vine on the effluvia which cause
fevers. 9 3 E8 G&
lin paper by M. Muntz on the con-
'servation of grain in reservoirs, read be-
fore the French Academy of Science, it
is stated that to secure all the advan-
tages of such means of storage the grain
shoulf be comparatively dry, the closure
perfect, the temperature of the walls
pretty constant.
! "A corporation has been recently or
,ganized in Boston, with capital of ST.
600, 200, to finish the bottoms of boots
and shoes by new invention. 1t is
claimed that by the aid of the machine
six hundred to eight hundred boots can
be finished by one operator in one day,
where one hundred and fifty to two hum
dred are now done by hand.
"A simple hygrometer can be made
by a piece of catgut and straw. The
catgut, twisted, is put through hole in
a dial, in which straw is also placed.
In dry weather, the catgut curls up; in
damp, it relaxes; and so the straw is
turned either to the one side or the other.
Straws do not only "show which way
the wind blows you see.
Prof. Perosino and DIR. LIGHT, who
have both experimental upon the prin-
ciple of the transmission by telegraphic
wires of the forms and colors of objects
in the same way that sounds are trans
mitted by telephone, hope to ultimately
succeed in contriving an apparatus by
which two persons who are separated
BY an ocean will able to both see and
hear each other.
Mr.. w. HI. Preece has determined,
withia very close approximation to ac-
curacy, the area protected by a proper
ly adjusted lightning rod. His conclu-
sion is that lightning rod protects
comic space whose height is the length
OF the rod, the base being circle
having its radius equal to the height of
the rod. This was the conclusion ar
rived at by Sir William Snow Harris
when engaged in fixing his protectors to
the masts Of ships.
"A dairying company Of London has
lately established laboratory at which
samples of milk received from farmers
are subjected to chemical analysis.
Prizes have been offered by the COM
panY, which are to be given to those
farmers whose milk-supply stands high
est in quality during stated period of
time. The samples of milk are care
fully examined by the company's an
alyst, whose analyses and reports will
decide the competition for the prizes. 1t
is expected that much valuable informa-
ton respecting methods for producing
the richest possible milk will be secured
in this way. ''5p' t''st
A Nuremberg chemist has devised
. new method of decorating silks and
other fabrics, which is expected to su-
persede embroidery. The art is called
" eidographie," and the operator uses
hollow pencils which are charged with
a fluid metallic compound. On ex-
posure to air the compound instantly
hardens. Every color can be produced,
and the designs traced with the pencil
are exceedingly durable, lasting as long
as the materials on which they are
traced. Glass can be stained and wood
enware and pottery decorated by the
same process. The manufacture of the
pencils has already become considera-
BILE industry in Germany.