The Louisiana Democrat. [volume] (Alexandria, La.) 1845-1918, 1889-11-06
SCIENCE AND INDUSTRY.

"A Russian inventor has introduced
most curious and ingenious anemo.
graph or recording anememcter, in
which the same record indicates ut the
same time both the velocity and the
direction of the wind.
A new heat motor bos lately been
introduced which operates without
valves OR exhaust, using the same air
over and over again at each stroke.
and except for a small amount of leak
age would run indefinitely by the sim.
pie application of heat and the cooling
medium.
"A celluloid film for positives. which
gives the appearance of photograph
on ivory is now being manufactured.
One grade is delicate sea-shell pink,
another white, and the third closely
resembles ivory. After drying, the
positive prints are flowed with papy.
rollne varnish. The pictures may be
produced either as vignettes or with a
margin OF clear film.
Satisfactory tests have been made
OF the new liquid. pyrodene, which
renders wood, textile fabrics and such
lnliam'nable materials tireproof. The
liquid, which is an English invention,
is made of all colors, SO as to be used
as a substitute for paint, and is claimed
to render houses entirely fireproof.
-Pasteur's system of incubation for
anthrax and splenetic apoplexy is be.
ing successfully introduced on large
scale in New South Wales. The ex.
periments have been sc successful tina,
many stock owners are anxious to have
their sheep vaccinated at once. Pas
tours agents offer to vaccinate sheer
at the rate of six cents per head, OF
which four cents is for Pasteur' royalty,
and two cents for tho necessary ex-
pense.
"A writer in aBuenos Ayres journal
reports having examined the fiber
made from the reeds and rushes of the
lowlands of the Parana, and finds the
textiles manufactured therefrom to be
undlstlnguishable from those made OF
wool or silk. Blankets, heavy goods
for mems wear, lettings, and 'black
silk dress goods are among the ar.
ticles produced from the fiber, and are
pronounced unriyaled for texture.
finish, color, and durability. Paper
pulp is also made by means of newly
invented process from these reeds and
PUSHES.
"A new invention exhibited in Mex.
leo is the photographing photophone.
By speaking in aphotophone transmit
ter, which consists of highly
polished diaphragm. rejecting a raw
of light, this ray is set into vibration
and Il photograph is made of it on a
travelling band Of paper. If the image
OF this Photographic tracing is pro.
jected by means of an electric arc or
oxy-hydrogen light upon selenium
receiver, the original speech is then
heard.
The cement commonly employed
for fastening the tops on kerosene
lamps is plaster of Paris, which is DO.
rus and quickly penetrated by the kerr
osene. 1t is now stated that another
cement, which has no such defect, is
prepared with three parts ofresin, one
of caustic soda, and five parts of water,
this compost. On being mixed with half
its weight of plaster of Paris. Tho
mass sets firmly in about three-quar-
tiers OF an hour, and is said to have
great adhesive power, not permeabla
to kerosene, a low conductor of heat
and not specifically attacked by heat
Steam pipes of copper are now made
by electro deposition from sulphate
of copper solution. The pipe is formed
on an iron core in the depositing bath,
and the copper is pressed by moving
tool as it is deposited. By this opera
lion u fibrous strength is given to the
crystalline copper. After the pipe is
thus formed it is subjected to hot steam
which expands the copper she'll, or
pipe, and clears off the iron core, thus
separating the two. These pipes have
no joint. and are said to be very strong,
tests showing that they break with
strains OF from twenty-seven to forty
one tons per square inch.