The Worthington advance. [volume] (Worthington, Minn.) 1874-1908, 1890-07-03
SCIENCE AND INDUSTRY.

Gearing for electric railways made
out OF rawhide is preferred to metal, %
1t makes far less noise and wears better.
Through errors in the triangulation
OF Hungary, the maps of Austria have
heretofore made it out to be much
smaller country than it is in reality.
The official maps show that it contains
3.247.12 square kilometers.
Naval experts are of the opinion
that the limit Of efficiency in rapid fire
ordnance is reached at finch caliber, as
above that the ammunition, which must
necessarily be fixed, is too heavy to be
quickly handled. -
AT late meeting of the London
Geological Society, Mr.. A. D. Bartlett
attempted to prove that the varieties Of
the domestic dogs owe their origin to
wolves and jackals. the habit of barking
having been acquired under the influ-
ence of domestication.., w. Es.-.-,. -
The most striking exhibit in COL
lection of photographs before the Royal
Meteorological society was large num-
Der of exceptionally fine photographs Of
clouds and atmospheric phenomena re-
producing in most faithful manner the
splendid contrast of white clouds and
blue sky, to do which is so difficult =
feat of photography. ..,..:-~.-. ..-f
The American Neurological Society,
at a recent meeting in Washington.
advocated the adoption of the metric
system by the Government for custom
house and foreign mail service. The
metric system is now used by twenty
four nations in invoicing goods for ship
ment abroad, and many of them use it
for all purposes. Science. s.
Tho excavations being pursued at
Megalapolis, in the Peloponnesus, under
the direction of the British School of
Archaeology, have resulted in some in
teresting discoveries. Besides uncover
Ing the site of Greek theater, the ex-
cavators have found in a tumulus a
small cylindrical sarcophagus, contain
ing bones and two pieces of gold orna-
ment similar to those discovered by DR..
Schliemann at MycenB and elsewhere.
The true scientist seeks knowledge,
and knowledge only, with the sole ex-
pectation of rising through nature up to
natures God apd lifting mankind to q
state of fuller happiness and broader
enlightenment, taking no thought of
individual gain. The inventor files a
caveat or secures patent and sits down
in the enjoyment of wealth. The sisen-
fist heralds his discovery and returns
at once to test tube and crucible, seek
ing yet other secrets which bless man
kind.-Galveston News.
"A novel arrangement for securing
an abundance of soft Ii hit together with
perfect ventilation has been installed in
an opera house in Chicago. The device
is, in form, similar to large parasol,
eighteen feet in diameter, the perfora-
tions in the cover permitting the escape
OF the vitiated atmosphere. The rod
and handle are formed to permit the use
of gas jets if necessary, while from the
tips of each rib incandescent bulbs hang,
giving a perfect and powerful circle of
light. Another feature is the use of in
candescent bulbs, arranged in wire
net, to indicate the name of the COM
pany playing.
BY new method of cementing iron
the parts cemented are so effectually
joined as to resist the blows even of q
sledge hammer. The cement is COM
posed of equal parts Of sulphur and
white lead, with a proportion of about
one-sixth of borax. When the compost
ton is to be applied it is wet with
strong sulphuric acid, and thin layer
OF it is placed between the two pieces of
iron, which are at once pressed together.
In five days it will be perfectly dry. all
traces of the cement having vanished,
and the work having every appearance
of welding.