St. Landry democrat. (Opelousas, La.) 1878-1894, 1892-03-19
POPULAR SCIENCE"

A ton of coal yields nearly ten thou
sand feet of gas.
Poor sewerageeis credited with'the in
creased death rate in San Francisco, Cal
General Schofeld has ordered that all
recruits entering thenUn'teo STATES Army
must be vaccinated.
The standard gold s'coin of England
consists of twenty two' ,parts'pure gold
and two parts of "copper"
A French scientist, II: DTonier,' has
invented new magnesium lamp "hlch
burns for regular periods ,of twenty Tour
hours without extinction.
Paner properly treated with chemicals
and then subjected to great pressure Is
being used for flooring maserlal'and Tor
General use in building. asia Sfre-resistlng
substance.
neculiar feature ofAstrawberry color
ino ~ that whilst the berries in the open
air ripen from the stem, extending to
the point, those growntunder,glass rlpen
at the point first
A great improvements machine pear
mos il made from compSessed'Wood pulp
combined with graphite. Nouubrlcatlon
is necessary, and the amount u 1iAc'ion
is greatly diminished.
Photography of speech,>or rather OF
the fleeting expressions ana movements
of the human countenance during speech
is the latest of the many strlumphs OF the
instantaneous process.
race was won at Liverpool, England,
recently by a,horse that had undergone
tbe oneration of tracheotomy to cure
roar;n9. The fact that he had a silver
| t,be in his throat did not seem tolmpede
his speed.
February, in 1900, will not contain
tventv-nine days, although it will be leap
wear. February, in 1900, also contalne d
only twenty eight days. There IS slight
error in the Gregorian calendar, but 1t
will onlv amount to one day in $3.50
years.
new material is being made by an
English company which resembles leather
and India rubber, and will be made into
boots and shoes, waterproof clothing and
other similar products. 1t IS known as
b,andyte. but the composition is not
made public.
The difference in the length of the
cables in the East River Bridge, Brook
lvn; N. Y, when the thermometer re-
eisters zero and when it registers loo de-
orees above, is two feet, four inches.
The difference in the rope which hauls
the cars is seven feet six inches.
1t now requires but thirteen pounds o.
water converted into steam with a pres
sure of IT'S to 200 pounds in the boiler
to secure one horse power with triple
evanston engine. By the use of one
third more coal the pressure IN the DolleL
and the horse power can be doubled.
Recent statistics show that France has
525 learned societies, of which l5o have
been officially recognized as OF national
Importance. OF the total number, nine
ty.tive are historical and social; ninety
five agricultural and horticultural; fifty
seven medical and pharmaceutical; forty
five scientific; forty-one artistic; thirty
seven geographical; and the rest insect
laneous, including Photographic, stats
teal and ballooning associations.
So-called luminous clouds, which ap
pear after the ordinary twilig mt glow
have faded, have been observed on sum
mer nights since 1885, and have beer
supposed to have some connection Will
the Krakatoa volcanic eruption. They
are often seen in the same place on sew
eral successive nights, moving at helsh
of more than fifty miles. They have
been noticed in both hemispheres, bu
are now believed to be breaking up an
a thorough, systematic observation Il
every part of the world is urged betor'
they have disappeared altogether.