The San Saba news. [volume] (San Saba, Tex.) 1873-1966, 1889-06-21
POPULAR SCIENCE.

Mercury may be purified by the simple
aspiration Of air through it.
Ele,tric targets Cor small arm practice
are giving much satisfaction in Italy.
Vuleanized asphaltum pavement is
being introduced IN the City of Mexico.
silesia intends establishing geological
station for the observation Of fresh water
fauna
London az has an unusually large
amount Of carbonic acid in it during the
winter.
The isolated electric light installations
IN the Madrid theatres arc almost total
failures.
A soap mine has been discovered near
La Mea, south Of Imuris, State of Sonora,
Mexico.
A six weeks electrical exhibition is
propoled to be held in ST. Louis next
September
Capitalists in zurich and Basic intend
utilizing the falls Of the Rhine for cleo.
tricsl purposes.
Professor Eaton. Of Yale, advocates the
storage battery system for street railways
as beirg much safer for the public.
In the Berlin Observatory a series of
astronomical panoramas have been me
pared % explain the phenomena Of solar
eelipses.
It is believed that the electrical equip
ment Of the Department of the Interior
can hardly be equaled in the world for
safety and efficiency.
Professor Ayrtou estimates that the
power wasted at Niagara Falls exceeds
that which could be produced by the
annual consumption Of $50, 600, 600 tons
Of coal
In the country districts of Sweden
s5ees5 I'd isdep ias5sasi9 q.
stalments worked by turbines at very
small expense.
A scientist, who claims to have dis
covered the secret Of petrifylng wood on
a large scale, says that by means of his
process the largest wooden buil6 ings
may be petrifed.
The microscope often reveals impuri-
ties in diamonds, particles of organic
matter and bubbles of gas being com
mon. Quartz, chlorite, pyrite, hematite
and topaz have also been seen.
Recent developments tend to show
that the chief cause OF the burning out
o. dynamo armatures is the insecure
fastening Of the wire to the core, and
the consequent chatting of the ;nsula-
ton due TO the movement of the wire.
It's reported that DR.. Eisenmann. Of
Berlin, has invented piano which, by
the aid OF electro. magnetism, can sus-
tain. increase and diminish sound.
Another novelty will be that by moving
TIE electro magnets the timbre of the
tone is CHANCELLOR example, from that
Of a violincello TO piccolo.
A fine quality of iron ore has been dis
covered some forty miles west of Havana,
Cuba, not far from the port of Mauil, and
found TO test some sixty per cent. in iron.
The first cargo Of this mineral IS now
loaded, destined for Birmingham, Ala,
by Pensacola, Fla. It IS said that there
is some 100, 600 tons lying upon the sur
face at the mine, which can be brought
TO the coast at small expense.
It Is claimed that lighting trains by
electricity has been a rather costly OK
pertinent, and the results have not been
altogether as satisfactory as was ex-
pected- At the commencement of the
run the light furnished IS all that could be
desired, but after the current has been in
operation several hours the light gradu-
ally becomes dim aud insufficient for gen
eral purposes Whether the motion of
the train has any eject on the battery has
not been determined.