The Republican. [volume] (Oakland, Md.) 1877-current, 1889-04-06
SCIENCE AND INDUSTRY.


during rest after stress beyond the
elastic limits.
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 annual production of coal in
this country and Great Britain, in the
amount of force it is capable OF yield
ing, according to Prof |. S. Newberry,
of the Columbia School of Mines, is
equivalent to 1,000,000,000 men work.
ling for 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.
Il 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 combining violet
and vanilla in certain proportions.
Sanitation ivory is made OF various
lcoNpounds and by various processes,
and no less than twenty two patents
had been issued in this country to in
yentors 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 u 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 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 it
is sold like groceries at general stores,
and people are using it ad libitum, in
huge doses, for all sorts of ailments,
it happens that we see cases of quinine
habit and even quininc intoXication,
while in minor degree many constitu-
tons are as perceptibly impaired by
chronic cinchonism as others are by
alcohol or tobacco, tea or coffee.
Quinine is not q food, but a drug,
which like all drugs, should be used
with moderation and Judgment
Foote'S Health Monthly.
Application for a patent on an
electric-light method of instantaneous
photography was made recently. The
apparatus is designed especially for the
detection of burglars. 1t can be so
arranged that a burglar, in entering a
bank, Office, or dwelling will, in his
operations, touch something which will
cause flash and result in his being
photographed. A number of cameras
may be placed in room and a variety
of views taken simultaneously. The
tell-tale wire can be fastened to the
knob of safe or door, SO that the in
truder can not avoid touching it, thus
disclosing his identity.
The pneograph is novel instru-
ment devised by DR.. Mortimer Gran
vile, an English physician. 1t con-
sists of a delicately suspended and
counterpoised half-disc, with an ar
rangement for moving smoked paper
under tracing needle. When held
over the mouth, the half-disc rises and
falls with the breath. The needle is
thus made to trace Wavy line on the
moving paper, and the character of
this line indicates the force. continuity
and duration of the expiration. The
tracings in diverse conditions Of the
lungs show very marked and apparent
II, eirr