Wessington Springs herald. (Wessington Springs, Aurora County, Dakota [S.D.]) 1883-1891, 1884-09-19
SCIENCE AND INDUSTRY.

Acoustic canes are . French invent
ton for the benefit of persons afflicted.
with imperfect hearing. /
The electric st~reet-cars of Cleve-
land, o., make eight miles an hour,
easily.-Cereland HeroM.
"A Paterson silk manufacturer has
taken out q patent for q process BY
which cotton and silk threads may be
twisted about light wires, to produce
the effect of IN ostrich feather or plume,
for ladies' hats and other purposes
NewarG Register.
Florida appears to be the Gland Of
Flowers to some purpose: The Ma
sonat Druggist says that the manufac-
ture OF perfumes from Florida flowers.
is becoming IN important industry. and
that a process has been'recently devised
for extracting the sweet flavor of the
cassava plant. j,
The employment of an invisible
actinic ink, of which there is no trace
on the paper OF in the image upon the
focusing screen. it is said will prevent
forgery of bank notes. AS, soon as one,
begins to develop the plate the word
''forgery," written with the ink, ap.
PSo1o VI CSdIAVCs- DOoeOHe oOn1Ituess'
--What is claimed to be a valuable,
rust protector is among the recent Ger
man Inventions. 1t consists of ordi-
nary Oil paint mixed with ten per cent.
of burned magnesia, baryta,. or strontia,
as we'll as mineral oil. This n~eutralizes>
the free acid of the paint, and the al
kaline reaction protects the iron from
rust. 7I
A new synchronous-multlple tele-
gray oh system was recently tested. In
five minutes there We're sent over one
wire, in six circuits, 1913 words while
sos We're. received. In ten minutes
over n wire, using six circuits, 2,244
words were sent, averaging about thirty
seven words per. minute to each cir
cult Chicago Herald.
-A,design has been submitted to the
Australian Minister for Water Supply
of a continuance for bringing down
rain. 1t is in the form of o balloon,
with a charge of dynamite underneath
it. The balloon is to be sent into
the clouds, and the dynamite is to be
fired by a wire connecting it. with the
earth. The inventor, Mr.. f. S. Haines.
OF Richmond, intends to try it in the
dry districts of New South Wales.
The air brush was one of the use
full and interesting inventions exhibited
at the recent Photographers Conven-
ton in Philadelphia. A little holder is
charged with India ink, and by a bell
lows operated with q foot pedal, after
the manner of a sewing machine, tho
fluid is blown upon a family outlined
portrait, the result giving a,pieture SUI
perior in many respects to the best
crayon drawing. A l~ife-size portrait
may thus be made IN a. few hours,
where as formerly by the use OF the
stump and pencil rs many weeks We're
required.-Rh5!odelphi0 Press.
A correspondent OF the Scientific
american has been figuring on the red
sunset question. He says: 'sTo esti-
innate the possible quantity of ashes
required to give the red tint required in
the sky, let us assume that an inch of
ashes are spread through. ten cubic
yards OF air. This gives a dilution of
$4,000 times. Astronomers tell us the
cause OF the red light reaches sixty
miles in the air. At the rate of dlftu-
sion of the ashes that is assumed, this
would require q mass of forty-two miles
of cube, or a mile OF ashes one mile
high, torty-two miles wide and LOO
miles long.