The Worthington advance. [volume] (Worthington, Minn.) 1874-1908, 1889-05-23
SCIENCE AND INDUSTRY.

SCIENCE AND INDUSTRY.
Files cnn. it is said, be recut by
cleaning them in acidulated watsr be-
tween two plates of carbon and closing
the circuit SO as TO lorna real voltaic
sell. @ @'s #
One sof tho chief features OF the
use of paper faoric for building pur-
poses is the ease with which it can be
worked into sheets of any required
width or thickness that will not be af-
tected by changes of temperature or
humidity. Miro T~%E#s$z 4
The Italian Admiralty, as the re:
suit of numerous experiments, have
given orders that henceforth all 2ex-
posed parts of machinery are to be
fabricated exclusively with castor oil.
while mineral oils are 7tosbe used for
cylinder and similar fabrication.
Z To withdraw an excess of blood
from the brain. Professor Preyer. of
jena. makes his patient stand with one
arm outstretched until the limb aches
violently. This conducts IN excess q!
blood to the arm, and seldom faa< 70
relieve the brain.-Medical Bulletin.
~-Houzean learned that some AMI
mails are capable Of measuring time
that particularly interest them. He
says that female crocodiles abandon
their eggs in the sand for ten or fifteen
days, according to the species. and re.
turn to the spot at the exact time when
they are to be Matched.
"A tack mac:.Ane will make from
2'O to 275 lacks per minute. The work,
however, does not end here, as the
tacks are galvanized, timed, polished.
leathered and variety Of processes
gone through with before the tack
reaches the packing room. The total
output Of tacks in the United States is
800 tons day, all of which are readily
consumed.
Mr.. Friese Greene, British pho.
tographer,, has actually produced a
picture with only the light issuing
from his eye. Having stared for fif.
teen seconds ut 3OOO-candle electric
ar, only three feet away, he closed his
eye and quickly brought it over sensi-
tive plate at a distance of one inch.
The result was a very faint but distinct
image of the arc and the carbons, due.
probably. to momentary phosphores.
cence of the retina. A second attempt
failed. and gas lights proved too weak
to produce effect.
I'm Dalmatia chrysanthemums are
largely cultivated to supply the chem.
lists with the substance from which the
w~ll-known ''Dalmatian insect pow
der" is made. The island of Lesina is
tho chief seat Of cultivation. and the
flower most generally grown is G. Gin
etariGfolium Trev. 1t is said that nc
other local crop pays so we'll. the prod.
ut of a single acre of ground selling
from $500 to 1880, and the Govern
ment yearly distributes plants at very
low rates in order that the industry
may be still further developed.
The Austrian brentwood furniture
il, manufactured of ordinary red beach,
which is very plentiful in Hungary
The timber is sawed into strips from
an inch and a half to two inches square
and these are turned into round rods
They are placed in an air-tight case
and exposed for fifteen minutes to thu
action of superheated steam, which
makes them so pliable that they cap b.
bent by hand to the iron patterns
where they are secured and left to dry
for several days, after which they art
ready to be used in the manufacture o
the furniture.
The treatment of the insane is 8
subject which penetrates social ant
domestic life to the very core. Tht
Lancet lays down three great desid
erata in the practical solution of thi!
far-reaching problem: 1. That tn,
insane should be conducted to the re
covery of their proper senses by tn,
quickest. the most efficacious, and tn,
most kindly means. 2. That the great
est possible amount of teaching as t,
what insanity is in all it's relationship
should be got out of the experience
derivable from practical work in con
nection with the insane. 8. That tn,
confidence OF the public should be es
tablished in the assurance that ever.
Thing that can be done is being don,
for those members of the communit,
who are insane"