The weekly messenger. [volume] (St. Martinsville [i.e. St. Martinville] La.) 1886-1948, 1889-07-13
SCIENTIFIC SCRAPS

|
The results of glass engravin, !,
electricity are said to be of marvello.
] 'lelicacy.
| A Canadian has patented device h,
which he can make a years supply A.
ice for Is cents.
A paper that resists the action of bos
fire and water, it is said, has been n.
Gently made in Germany.
Professor Kuleschoff, after long Il,
vcstigation, concludes that the ancesto,
of the European cattle must be searcbe
for in India.
In Germany wash consisting of "a.
affine wax dissolved in heavy coal ty
oil has been found very eflicaciow for
damp walls.
The underground electric railway IN
London will be only twelve feet below
the street level, and the roof will com.
within about two feet of the surface.
The body of boy recently drowned
in pond was found by fastening an in.
candescent electric light to a poe and
Eliminating the water about the bottom
of the pond.
A new powder adopted in the British
army is the invention of Mr. Hcngst. h
is said to be smokeless, flavorless and
non-heating, with less recoil and report
than the powder of the old sort.
A line of cable cars passing through
La Salle-strcet tunnel, in Chicago, is to
be lighted by incandescent lamps as the
cars enter the tunnel, the current being
thrown out as daylight is again reached.
DR.. Thurston, the superintendent Of
the Madras Qndia museum, is visiting
the European electrical establishments to
find suitable light to be usel in TWEEN.
ty fathoms of water for the use of the
pearl fishers.
Frenchmen of Science have produced
artificial emcralds by fusing silica, alu.
nina and glucina with traces of oxids
of chromium, with acid molybdate Of
hthia at temperature of from 800 to
1OO degrees for Is days.
a novel toy has been built in Bridge.
port, Conn, which consists of an iron
boy four feet eight inches high, driving
handcart. An electric motor inside
the boy Is put in motion By current from
storage battery in the cart.
Lake Superior is said to bc the most
ancient of the great lakes, dating back
to Cambrian, and, it may be earlier
times, and that it formed in other age,
one of the sources of a great river sys-
ten, terminating on the Atlantic sea-
board.
In Switzerland cars are run up to 4
hotel 300 feet above the lake level by
rope traction, the drum being worked
by electric motors, which are driven BY
dynamoS two and half niles distant
where there is sufficient water power to
turn turbine wheels.
Moths of some kinds are said to
change color to match the food that
they may happen 20 eat. A great moth
enclosed in Il box lined with pink tissue I
paper turned from gray-green to pink,
and when white lining wa, put in the
box the moth became white.
A discussion as to the height of trees
IN the forest of Victoria has elected
rom Baron Won NIuellor, the govern.
nent bo;anist, the statement that he saw
'ne of height Of 525 iect. The late
Chlci Inspector OF Forests measured one
fallen and found that it was 4e5 feet
Ong.
How spongcs bore into limestone or
shell is as yet an unsolvad problem. Mr..
NassonoH has Investigated new species
II clone which tunnels oyster AMI mus
eel shells, and he believes that tie Dor.
NJ of the canals and galleries is per.
orned solely ly the soft paris of the
PONCE. The penetration OF the pro-
ongation Of the body of th3 sponge in
o the shell appears to be accomplished
" the secretion Of u corrod.ng liquil.