The American citizen. [volume] (Topeka, Kan.) 1888-1909, 1889-04-05
SCIENCE AND INDUSTRY.

The tensile Str6ngtn anu eLASdO
limit of certain classes of iron increase
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, buN
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, Ia
equivalent to 1000, 900, 600 men work.
ing for year.
The number of artificial teeth made
in America is very large. The houses
which export prepare teeth OF dlHer-
emit 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 a 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.
limitation 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 non-conductor
of heat. They have a warmth pre-
serving power far out of proportion tc
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 quini=e
is an unalloyed blessing. Now that il
is sold like groceries at general stores
and people are using it ad libitum. IL
huge doses. for all sorts of ailments
it happens that we see cases of quinint
, habit and even quinine intOxication
while in minor degree many constitu
} lions are as perceptibly impaired b!
chronic cinchonism as others are b.
! alcohol or tobacco, tea or coffee
Quinine is not food, but a drug
which like all drugs, should be used
9 with moderation and Judgment
. Foote'S Health Monthly.
Application for patent on a.
; electric-ight method of instantaneou
!. photography was made recently. Tn
e apparatus is designed especially for tn
detection of burglars. 1t can be 8
. arranged that burglar, in entering
= bank, Office, or dwelling will, in hi
q operations, touch something which wi
g cause a flash and result in his bein
IS photographed. A number of camera
may be placed in a room and variet
- of views taken simultaneously. Th
!. teIl-tale wire can be fastened to tn
70 knob of a safe or door, so that the II
ID truder can not avoid touching it, thu
he disclosing his identity.
The pneograph is novel instr
ment devised by DR.. Mortimer-Gral
US vile, an English physician. 1t CO..
81 sists of a delicately suspended ar
a counterpoised half-disc, with an a
"a rangement for moving smoked pap
ed under tracing needle. When he
en- over the mouth, the half-disc rises al
'et tails with the breath. The needle
no thus made to trace wavy line on Il
~ moving paper, and the character
this line indicates the force. cOntinui
IA and duration of the expiration. II
tracings in diverse conditions OF t
=. lungs show very marked and apparer
In sirni6aon diffaranraR