The San Saba news. [volume] (San Saba, Tex.) 1873-1966, 1889-12-20
PvrunAR SCIENCE.

4 new power, it is thought, has been
put in the hands Of metal workers by the
new discovered process of cheapening |
oxygen.
The new method OF automatically re-
gistering observations by means of pho
Biography has been successfully expert
mented with by NJ. Gerard.
The smokeless powder that Austria is
using makes such fearful smell that il
will have to be abandoned. At a recent |
practice shoot several men tainted from
An electric spark has been photo
g1aphed by means Of a special camera, in
which the sensitive plate rotated at, 1t IS
said, a velocity of $500 revolutions per
minute.
The specifications for the arc light
plant in the Washington navy yard are
said to be the most complete Of the kind
ever issued. There are to be 100 200O-
candle power arc lamps.
DR.. Burroughs, of London, uses nitro
glycerine as a substitute for alcohol in
cases of emergency. It will kill almost
as surely. and, under favoring circumstan-
ces, with less pain to all concerned.
A s.palace chicken car" is the latest
development of luxury in railway trans
portation. Thousands of chickens can
be carried in one of these cars.across the
continent and in good condition at a
great saving in cost, as well as economy
in space.
Yoigtlander, a famous optcian of
Brunswick, has just perfected new lens,
giving a very wide angle, working with
large aperture. Thus it is very rapid,
ard can be used in very confined situa-
tons, such as rooms for groups and sin
gle portraits.
A Berlin firm are making very power
fui little magnets for the special purpose
Of extracting iron and steel filings from
the ewes and skin of workmen engaged
in iron works. These magnets are OF she
horseshoe shape, nickleplated, with thir
rounded poles.
. The whole Eiffel Tower could be liftec
by four men CT average strength. Wher
. it was about half its present height
few men actually did lift it. The con
/, struetion of the tower is based on tn
! cantilever principle, and its bulk OF 64O'
{ tons Is so adjusted as to press en- tn
foundation with less weight than that OF
I man in an armchair on the floor.
!, If sodium sulphate is allowed to crys
+ talize between plates of unglazed porce
e lain in the open air, and if the crystalliza
/ ton it reproduced two or three times b
=, sprinkling with water, the plates Ia
e into powder. The same phenomenon
le observed with very hard stones. Tn
crystallization may be a cause OF tn
communion of rocks which resist watei
The applications of electricity
mining are rapidly increasing; coal GU
l, tiers, drills, all kinds Of mill machinery
l. aerial, surface and underground tran
I wavs. are ali being driven by electriclt.
u and the time seems to be approachln
y very raps-ls- when the transmission
= power by electricity from distant col
IT. venlent generating centers to the sea
"a tered mines of district will be the rui
- Experiments of very interesting n
- ture have recently been carried out f
r. the purpose of ascertaining exactly Il
y relative resistance of various pigments
~ atmospheric changes and to the corrosi'
" action of sea water. The prevention
:, corrosion by salt water was found to
20 possible by the-admixture of the oxide
mn some electro positive metal, such as eau
~ tic lime and soda, but the efficiency
- such a covering dimirishe, when its ak
- line PROV 'oli7ed