Delaware state journal. [volume] (Wilmington, Del.) 1870-1883, 1881-01-20
SCIENTIFIC NOTES.

Trials with the electric light in navige-
ton at night have lately been made OF
the Rhine. 1t is hoped that the result of
these trials will lead I'd new phase in the
river navigation.
| Whereas previous investigation have in.
Dictated height of about $50 miles as the
greatest extent OF the earth's atmosphere
u. Jose j. Landeur in a recent paper
places 1t at not less than go, 600 miles.
| DR.. Werner Siemens has applied cleo
| tricity to the operation of elevators His
| system, which operates through the trans
mission of power by the dynamo-electric
machine, is as safe as the hydraulic sys-
TEN, and is claimed to be far less costly
and inconvenient.
| 1t ia fact known to cloth manu-
facturers that vegetable tibers mixed with
wooden hbers cannot be equally spun, dyed
or woven together. An Austrian scientist
claims, however, to have discovered a
chemical process by which this combination
of varying tibers may be rendered, amena-
bic to the operations mentioned.
A new theory of the cause of earth
quakes has been propounded by Dr.
Novak, of Pesth He considers that, be.
sides the rotation of the earth on its axis
and its revolution around the sun, multi
pliclty OF motions of the earth appear in
space, in virtue of which the earths axis,
aud with it the equator, shift their posi-
4 ton. This causes a variation of the
forces Centrifugal and centripetaD iufli-
encing the earth'g form, and the earth's
crust has tendency TO adopt itself to this
charge.
The Bible says: Pray for your enemies
. n m Ri Ha u,,il -,
at a prayer meeting and prayed that his
enemy might be- forgiven for all the
deviltry be bad committed, aud might be
turned from the error of his way. And
the enemy, who waR present, began about
that time TO FIRE hymn books aud pretty
soon started for the praying gentleman
and 1t was clear that the prayer was not
answered for the enemy had 10 be pulled
on the prayist, who was toted home on q
stttes That man won, pray for his ga.
emies again. Boston Post
A Nuremburg chemist has devised 6
new method of decorating silks and Other
fRbricks, which is expected TO suppressed,
embroidery. The art is called edo
graphic, and the operator uses hollow
pencils which are charged with flui(
metallic compound, On exposure to all
the compound instantly hardens. Ever,
color can be produced, and the design
traced with the pencils are exceedingly
durable, lasting as long as the material
on which they are traced. Glass can b,
stained and woodenwaro ard potter,
decorated by the same process. Til
, manufacture of the pencils has airegd,
become a considerable industry ii
= Germany.
a Extensive observations OF the auror
+ borealis have been made in Europe, from
the results of which Herr Tremholt infer
that the aurora is local phenomenon
. circumscribed by narrow limits, sn'
manifested at inconsiderable distance
! from the earth's surface. The light i
a usually white, less often red or green
That sound often accompanies tho auror
4 Herr Trembolt believes TO be an indispu
table fact
r The experiment of irrigsting bonds il
/ the neighborhood of Paris with waite
i from the sewers is said to be- workin,
a successfully. Sterile tracts Of land hav
! been converted into fertile plains, Will
, no increase of sickness among the inhabi
: tants has followed, as was apprehended.
/ A new French appliance is an electri
brake which is made to operate on tn
E wheel brake by means of electrioit,
generated during the motion of the trail
a and applied at pleasure. Experience thu
i far made With this apparatus have beer
I entirely successful.