The Baltimore County union. [volume] (Towsontown, Md.) 1865-1909, 1909-06-12

000S66-A new IlDQ0 l0llcT
Like other modern occupations, wireless tele-
Rraphy has brought special disorders to man. In
the campaign in Morocco, the wireless telegraph
operators of the "Descartes" of the French
Navy have been pretty steadily employed, and
DIR. P. Belile, the surgeon on board. reports that
the Hertzian waves have developed various NAL
aides among these men. The eyes were much
affected, cases of slight conjunctivits, keratitis
and leukoma being common. This was due to
the very powerful action of the ultra violet rays,
and the wearing of yellow or orange glasses was
advised. Another ailment setup was eczema. of
which there were two cases-one of the wrist
and one of the eyelid-both difficult to cure. A
particularly uncomfortable case was that of an
Official who had worked the wireless telegraph
several years. but who suffered from painful
palpitation of the heart after using the sending
instruments for any considerable time. DR..
Bellile is inclined to attribute also to wireless
telegraphy much of the nervous arrangements
now becoming rather common among naval men.
The making of ice goblets, which cool bever-
ages as they are served, has been SO perfected
by H. d. p. Huizer. at his summer resort factory
near The Hague that 100 per hour can be made
with one horse power only small refrgerating
machine being needed to supply the cold brine.
The mold is of special metal, with core of por-
celain, and after pouring in the water the whole
is submerged in the brine at A. below zero for
six minutes, then passed for moment to spe-
cial heater, when the goblet is pushed out and
caught in paper holder. Each goblet contains
half a pint. It can be filed only once, but will
hold the beverage half an hour in hot weather.
"a
Every metal is believed by Grutin, German
&c. ,s1ow Ifnk,h a
CARDS as a gaseous transformation product. He
has made some of the orders perceptible for a
few moments at intervals by heating the metals
to 122o Fair.
Cork tissue or "tissu-liege" the novel water
proof fabric now being made in France, is ordi-
nary cloth with lining Of cork only 1880 of an
inch thick, and is a substitute for rubber cloth
that is claimed to be free from most of the de-
fects of that material. Before being sliced into
thin layers. the cork is freed from its resinous
matter, thus becoming flexible. The thin sheets
are then pressed into outer cloth, forming per-
feet lining for cotton, WOOL silk, ramie, felt or
leather. and the resin freeing treatment has
made the cork so plant that it may be folded
without breaking. The outer cloth or other ma
terial is unchanged in appearance. A garment
from the cork-lined fabric is soft and comforta-
BILE, is perfectly proof against water, does not
deteriorate like rubber CLOTH is very light, and
has no odor. When desired. another lining of
cloth may be used to cover the cork layer.
A+A
To see Mars and other heavenly bodies better
is an attempt of greater promise than efforts to
telegraph to worlds of which we know so lit
tie. The earth's atmosphere varies greatly in
clearness, and, while American astronomers
have established several observatories in yely
favorable localities, it appears that just the best
spot for a great international observatory
where the worlds supreme effort at looking out
ward can be made has not yet been determined.
study is now being begun of the conditions in
the Karroos, or elevated plains of South Africa.
near the scenes of the Boer War; At number
of stations estimates of coudiness will be made
on uniform scale, steadness of the air will be
adjudged by such observations as those of double
stars and Photographic tests will be made by
star trails. These sensitive methods are expec-
ted to show whether the air is better for seeing
than that of other places known.
-.
| For the best essay on the earth's interior, the
| University of Jena has awarded prize to NJ.
| Theme, whose theory is thus outlined: The
mean density of the earth is known to be more
than five times that of water. AS the surface
rocks have an average density of only 2K and
water of l, the interior must have a density of
about 77,-that of iron. 1t is fairly certain also
that the rgidity is slightly greater than that of
steel. He concludes that the earth's crust is
about $50 miles thick, instead of the 30 miles
the common estimate, and that it encloses very
dense and rigid core that he calls the barysphere.
"a
The new German method of fighting fire in
| LIGHT lf0I1ida like hanzino Or
in covering the surface with layer of foam
containing an inert gas, thus cutting off the air
| and making combustion impossible. The ap-
proved apparatus made by Prussian company
| near Minden, as described by Consul T. H. Nor
| ton, consists of simple metal cylinder divided
into two chambers, and provided with a long
| spout. One chamber is charged with an aqueous
solution of potash alum and sodium sulphate |;
the other, with a solution of sodium bicarbonate,
sodium sulphate, and licorice-root extract. AS
the two cylinders are inclined or reversed, the
two solutions mix as they issue from the spout,
and the chemical reaction between the alum and
blcarbonate gives prompt evolution of carbon
dioxide converting the licorice solution into an
exceedingly stiff and persistent foam. Even
when the burning liquid has become so hot that
its fiery vapor bubbles up through the foam,
the carbon dioxide rapidly cools it. In test by
the Hanover fire department, Is gallons of ben
zine-partly in shallow iron pan and partly
scattered on the ground-was allowed to burn
three minutes, and then received the contents
of two foam extinguishers which quickly ar
rested the fire. When the foam was removed
and fire relighted. water from Pinch hose was
insufficient to check the flames, which spread
rapidly, endangering nearby buildings.
-.
Bees return to their hives in direct line when
they have been carried away and liberated, up
to two miles. This has been supposed to be due
either to the sense of sight or of smell, but the
experiments of CASTOR BONNER have proven
that neither sight nor smell can serve the pur-
pose, and that bees have special sense of d.
rection." This sense is not in the antennae.
80
novel luxury for the hotel bed-chamber Isl
new signal apparatus hat gives the exact time
at any minute. small telephone receiver is
placed near the head of the bed or even under
the pillow, and pressing button causes a set of
gongs to strike, announcing through the tele-
phone the hour, quarter, and number of minutes