The Bossier banner. [volume] (Bellevue, Bossier Parish, La.) 1859-1952, 1889-06-06
SCIENCE AND INDUSTRY.


The tensile strength and elastic
limit of certain classes of iron increase
during rest after stress beyond the
elastic limits.
An English electrician has invented
material which he calls alterion, for
the prevention of corrosion in steam
boilers.
English electricians boast that they
are far ahead of us in their knowledge
of the science of electrotechnics, but
acknowledge themselves behind us in
the practical applications of electricity.
The al lual production of coal in
this country and Great Britain, in the
amount of force it is capable of yield
ing, according to Prof l. S. Newberry,
of the Columbia School of Mines, is
equivalent to 1000, 100000 men work.
ing for u year.
The number of artificial teeth made
in America is very large. The houses
which export prepare teeth of differ
ent colors. Canada demands mOlars as
white as snow, while in South America
they require teeth that are almost yell
low, and the large trade from China is
for black teeth only.
"A perfumer says that there is more
downright fraud perpetrated in the
manufacture of altar of roses than in
the making of any other perfume. Con-
necticut is prominent place for the
production of altar of roses. Hello
trope, one of the most popular*of per-
fumes, is made by combinin@ violet
and vanilla in certain proportions.
Imitation ivory is made of various
compounds and by various processes,
and no less than twenty two patents
had been issued in this country to in
ventors of artificial ivory prior to 1870.
India rubber, lime, sulphur, shellac,
camphor, ivory-dust, gelatine, paper
pulp, plaster of Paris, potatoes and
other materials enter into these imita-
ton ivory compounds.
| The Boston Budget is authority
for the statement that shirts are being
made out of paper at factory in a
New Jersey town. They are made OF
MANILA paper, combined with other
properties, and are peculiarly adapted
for winter wear owing to the properties
possessed by paper as d non-conductor
OF heat. They have a warmth pre-
serving power far out of proportion to
their thickness and weight. and are
said to wear and wash as well as linen.
1t has been questioned, with reas-
on, whether the cheapening of quinine
is an unalloyed blessing. Now that il
is sold like groceries at general stores,
and people are using it ad hbitum, in
huge doses, for all sorts of ailments,
it happens that we see cases of quinine
habit and even quinine intoxication
while in minor degree many constitu
tions are as perceptibly impaired By
chronic cinchonism as others are by
alcohol or tobacco, tea or coffee
Quinine is not food, but a drug
which like all drugs. should be used
with moderation and Judgment.
Foote'S Health Monthly.
Application for a patent on al
electric-light method of instantaneous
photography was made recently. Th'
apparatus is designed especially for th,
detection of burglars. 1t can be 81
arranged that burglar, in entering
bank, office, or dwelling will, in hi
operations, touch something which vii
cause a flash and result in his beinl
photographed. A number of camera
may be placed in room and yariet
of views taken simultaneously. Tn
tell-taIe wire can be fastened to th
knob of safe or door, so that the in
) truder can not avoid touching it, thu
| disclosing his identity.
> The pneograph is novel instru
ment devised by Dr. Mortimer-Grav
3 vile, an English physician. 1t COZ
5 sists Of delicately suspended an
t counterpoised half-disc. with an al
f rangement for moving smoked pape
: under a tracing needle. When hel
f over the mouth, the half-disc rises an
falls with the breath. The needle
thus made to trace a wavy line on th
moving paper, and the character (
this line indicates the force, continult
and duration Of the expiration. III
$ tracings in diverse conditions OF tf
+ lungs show very marked and apparen
ly significant differences.