The Colfax chronicle. [volume] (Colfax, Grant Parish, La.) 1877-1981, 1888-09-22
SCIENCE AND lNpusTRY.


Six or eight tons of cast iron can'
be made into steel in twenty minutes
oy one operation.
The woman who can control her
own tongue is greater than he who
ruleth city. She is also scarcer.-N
Y. Star.
1t has been estimated that after =
lapse of ten million years the sun can
not give out sufficient heat to suppors
life on earth.
The fabric known as Chinese grasv-
cloth is made from the fiber of nettley.
The cloth is peculiarly glossy and tramp
parent, and as betting for machinery
has double the strength of leather.
Two substitutes for the high pricef
gum arabic-one from iax-seed and tlse
other from starch-are expected q
serve all purposes for which the gen't
inc gum is used.
Without taking into account ~
small variations due to refraction, &c,
the days and nights are always of equaS
length at all points on tho equatoif
without regard to the position of thu
ecliptic.
Steel is iron with from One-half t.
two per cent of carbon. 1t was formert
ly prepared by heating wrought iro4
with carbon till it took up the proper
quantity. tits now made on a large scale
by the Bessemer process of burning
out the carbon and silicon of cast-iron
by forcing blast of air through the
molten metal.
Additional experiments have boon
made, and with good success, with the
new French method of coating pipes
with cork. A layer of cork is first en-
ployed, asbestos coming next, and
finally another layer of cork. The tenn
perature inside the pipes was some
1000 Cent, and after $50 hours the
temperature of the outer surface of the
coating was found to have only risen to
$50.
DIR. julius Pohlman thinks the
reason why our teeth decay SO fast is
because we do not use them enough,
and, like other organs that are not ex-
ercised, they tend to atrophy. Our
teeth become weak because unused to
hard work. The author warns mothers
and nurses not to give children soft
food if they would have them have
good teeth; in other words, make them
eat their crusts.
"A French experimenter, utilizing
the power generated simply by the
heat of the sun, has succeeded In rails
ing $500 quarts of water in an hour
from a depth of twenty feet. Extrava-
CANT hopes have been entertained that
in the future the energy from this
source may be so brought under con-
troll that many of the present methods
of obtaining power may be done away
with.
"A recent writer makes q strong
plea for simplicity in the terminology
of science. The late eminent chemist,
M. Mumas. is reported to have said
that the complexity and uncouthness Of
modern chemical nomenclature were
something gigantic, and that he found
it impossible to keep pace with all the
new theories and verbal alterations
that were flooding his favorite science.
An interesting development in
photography is in the use of clockwork
in printing from negatives. By this
means continuous web Of sensitized
paper is drawn at suitable intervals
under negative exposed to source
of light. After printing the paper Il
drawn, still by the mechanism, through
washer" sstoner" and s'fixer" success
sively; and appears finally a. . series
of finished pictures ready for mount
ing, and all alike in exposure, color
and tone.