The Republican. [volume] (Oakland, Md.) 1877-current, 1893-07-20
SCIENCE AND INDUSTRY.

The greatest depth under water
ever reached by a diver is believed to
have been attained by Capt John
Christensen, who went down 1876 feet
below the surface at Elliot Bay, Wash,
recently He remained at that depth
in his armor for twenty minutes, with
out Inconvenience Engineering and
Mining journal. a9
The prevalence of crimson colors
in certain fishes on our New England
coast on portions of which scarlet and
crimson seaweeds abound is explained
by Prof. j. Brown Goode by the red
pigment derived by the crustaceans
from the seaweeds they devour, and
which in turn form the food of the fishes.
Among the products which science
has put to valuable service is the net
tie, weed which is now being culti-
waited in some parts of Europe, its fiber
proving useful for variety of textile
fabrics. In Dresden thread is pro-
duced from it so fine that length of
sixty miles weighs only two and half
pounds.
The intensity of confined sound is
illustrated at Causbrook castle, Isle of
Wight, where there is well 200 feet
deep and twelve feet in diameter, lined
with smooth masonry. When pin is
dropped into it the sound of it striking
the surface of the water. 1872 feet be-
low, can be distinctly heard.
I'm 1892 the number of mines OF all
kinds at work in the United Kingdom
was 4, esq, the number of persons en-
ployed was ri sos, and the total amount
of mineral of every description raised
was 1915, $50, $50 tons. The total number
of fatal accidents during the year was
s62, and the number of deaths resulting
therefrom 1,0S4.
Work ON the mighty telescope FOR
the French exposition Of 190O,' which
was to enable us to see the man in the
moon, has been suspended, after con-
siderable progress had been made, in
the construction of it, especially in the
optic portion. The great lenses are
already cast, but the whole affair is
now abandoned for want of money. n
"A eoanpanpwitha capital of sa,OOO,-
900, obtained mostly from Scotland, is
engaged in Argentina in canning
meats for the European market, ship
ments last year amounting to lose
upon 10000 TONS worth 81, 100000! The
frozen meat business is also prospecting,
there having been shipments of about
5000 tons to England and France last
year. ,,,. Yot1 ,o4,-oeC "a ~,
Sales of wool in Australian colonies
are increasing very largely, the aggre-
gate Quantity disposed Of for the 1902
93 clipsbeing T25, 900 bales, as against
634, 900 for the previous season.. The
bulk of the sales, $50, 900 bales, were
made to buyers from Continental Eu-
rope, and SO, $50 bales were disposed of
to American buyers, who took stocks
less firmly than usual.
Intellectual work, according to M.
Jules Simon (who is, by the way, q
striking example of the correctness of
his own theory, is the secret of q
green old age. Nothing, he declares,
helps so materially to conserve physi-
cal strength as mental employment.
His own experience is in point. So
also is the membership of the French
institute, a congregation of hale and
hearty octogenarians."
lc VI iOOhinR
glass in Europe at the present time,
according TO the latest statistics is
something like 1850, 900 square yards.
In the mirrors of to-day the light is
reflected by a layer Of silver or an
amalgam of tin, but proportion of
light is lost in the process of reflection.
and the image is less luminous than the
original. The value of looking glass
is estimated by the thickness Of the
glass, because the thicker they are the
stronger they must be; but, speaking
scientifically, thick glasses are de-
fective, because the outlines of the
image reflected are less clearly defined.
"A well-known practi toner of medi-
ninaays: Probably you have noticed
idency Of epidemic diseases to
pmselves out, even in districts
no precautionary measures are
1t has been shown In the his
every great plague-the black
cholera and the rest, and now
ustrated in the grip. We have