Republican news item. [volume] (Laport, Pa.) 1896-19??, 1899-11-16

and breeding place for timber-borers
and other injurious insects. Trees,
as we'll as men, need hygienic sur
roundings.
The Widen process for coating steel
and iron consists in the use of bath
containing "a per cent. by weight OF
zinc, IA Of tin, Is of lead, and 0.5 Of
aluminium. AS in galvanizing, The
articles are dipped into the melte1
alloy and the resulting coating is
claimed to be the best known, being
firmly adherent, resisting injury.
Electricity has been applied to the
manufacture of glass. Formerly diff
culties were experienced in melting
the ingredients owing to- particles OF
coal and cinders entering the crucible
to the injury of the product. These
are now eliminated by employing an
electric arc within carbon crucible
to fuse the ingredients. Great econ
omy results, rs but 40 per cent. of the
coal formerly used is required. A pot
of glass can be melted in fifteen min
utes that by the old process would
require thirty hours.
Modern "sky- scrapers" have necessi-
tated the use of new kind of win
dow-pane. The lower rooms in such
buildings are frequently very gloomy
because their windows open only upon
we'll like areas and canyon-like streets.
To save, or supplement, the use of
artificial light in such rooms, window
panes have been invented consisting
of glass plates covered with prisms,
whose angles are so calculated that the
light falling upon them from above is
turned into the centre and corners OF
the room, instead of reaching only 'he
floor close to the windows. Another
form of pane consists of overlapping
strips of glass so. placed as to reflect
light into the room.
In the manufacture of newspaper
wood pulp, according to present meth
ods, cord of spruce wood is estimated
to equal 615 feet of board measure,
and this quantity of raw material will
make half ton of sulphite pulp, or
one ton of ground wood pulp. News
laper stock is made up with 90 per
cent. of the sulphite pulp and 80 per
cent. of the ground wood pulp. Now,
as figured by experts, the best of
spruce land, virgin growth, possesses
stand of about 1000 feet to the acre;
on twenty-five acres, therefore, of this
best spruce land there will stand 154,
600 feet of timber, which an average
company of loggers will cut in about
eight days; but this entire quantity
of wood, turned in at any one of the
large mills, will in single day be con :
verted into about $50 tons of such
pulp as goes to make up newspaper
stock, and this amount of pulp will
make about an equal weight OF paper.
For the purpose of photographing
the new planet, "Eros," on its ex-
pected approach to the earth again,
the astronomical department of Har-
ward university has in process of
construction a remarkable telescope,
likely, it is thought, to give results
OF great value to astronomy if the in
strument IS mounted in favorable
position. Though it will have an
aperture of only twelve to fourteen
inches, its focal length-a most re-
markable feature be 1876 or 162
feet-the position to be horizontal,
and the star reflected into it by means
of a mirror, the earth's motion to be
counteracted by moving the photo
graphic plate by clockwork. Thus,
as large horizontal photo heliograph,
anticipations of its peculiar adaptness
are entertained in the work of photo
graphing the fine details of the suns
surface when eclipsed, May 2s, 1900.
The images of the moon, too. obtained
with such telescope would be more
than foot in diameter, and, even il
printed without enlargement, would
probably surpass the best photographs
yet taken.
Advocates n Fourth Meal.