Republican news item. [volume] (Laport, Pa.) 1896-19??, 1900-03-08
SCIENCE AND INDUSTRY.

SCIENCE AND INDUSTRY.
instantaneous photographs taken by
NJ. Louis Boutan with camera 10
feet under water have shown fishes
two yards away, and he estimates that
good instantaneous pictures can be
had from camera submerged 25 feet
below the surface.
An object, like an iron anchor, that
is thrown into the ocean and is free to
sink, will go to the very bottom, no
matter how deep the sea may be.
The notion that at certain depth the
density of the water increases to
point exceeding that of iron, and that
the object would there be suspended,
is erroneous.
Wood crackles when it is ignited
because the air expanded by heated
forces its way through the pores OF
the wood with a cracking noise.
Green wood makes less swapping than
dry, because the pores contain less air.
being filled with sap and moisture,
which extinguish the flame, whereas
the pores of dry wood are filled With
air which supports combustion.
A new artificial stone of Belgian
manufacture is made in the following
manner: Eighty parts of extremely
clean and dry coarse sand are mixed
with 20 parts of hydraulic lime re-
duced to fine, dry dust; this mix
ture is put into an iron box, which is
plunged into boiler of water, and
this is hermetically closed. During
72 hours the cooking goes on under
pressure of six atmospheres, the
temperature being maintained at 165
degrees. At the end of this time the
iron box contains perfect homogen-
GUS mass of stone, which rapidly hard
ems upon exposure to the air.
The time honored method of glass.
blowing has been superseded in
glass manufactory at st. Helens, Eng
land, by automatic machinery which
is able to increase greatly the output
of the furnaces. The new arrange.
ment consists of moulds and blow
pipes worked by compressed air, and
is quite automatic in it's action. The
machinery is capable of turning out
tumblers at the rate of 5000 per day,
lamp chimneys at the rate of 5000 or
1000 per day, and large articles in
proportion. Under the old condi
tions the output of gang of work
men in day would be only 400 tum-
blers.
Lake Superior appears to exercise
a greater effect upon the annual
amount of precipitation of rain and
snow near its shores than any other
of the great lakes. The average pre-.
cipitation in year is about eight inches
greater on the southern than on the
northern side of Lake Superior.
Lakes Erie and Ontario also show
more precipitation on their southern
than on their northern shores, but the
difference is only three inches annu-
ally. In the case of Lakes Huron
and Michigan, it is the eastern shores
rs compared with the western which
get the largest precipitation, but the
difference is not great.
1t will be source Of regret to geolo-
gists and others that boring has been
suspended at the deep we'll at West
Elizabeth, near Pittsburg, Penn. This
well, which holds the American record
for depth, has reached point $685.
feet below the surface of the earth,
and ii was desired to continue the bor-
ing until the depths of some of the
European wells had been surpassed.
With the loss of the boring tools,
however, operations were suspended.
and it is hardly likely that they will
be continued At Wheeling, West
Virginia, there is another deep well
which penetrates to a depth of $500
feet, and recently Professor ]. C.
White of the West Virginia geologi-
cal survey has prepared an account OF
the geological sections through which
it passes. In Europe the Reibnitz
we'll with depth of 600 feet, is the
most famous.