Charlotte messenger. [volume] (Charlotte, Mecklenburg Co., N.C.) 1882-18??, 1888-03-03
SCIENTIFIC AND INDUSTRIAL

Pasteur proposes to rid Australia oil
its rabbits, which have become danger.
GUS pest, by inoculating them with
chicken cholera.
DIR. Siebelt, a Communication ply
sician in New York, a competent
authority on the subject, holds that
pneumonia is house disease and is in
fictitious, but not contagious The relief
and the prevention are no medicine and
plenty of fresh air."
One electric light system for cars en-
bodies both fhe dynamo and storage
battery, seeking to overcome the defe, Is
from one source of electricity by the ust
of its conjugate. Dynamo and engine
are in the baggage-car, and steam sup
piled from the locomotive, the storage
battery taking up the work when the
loco is uncoupled.
The singular fact is demonstrated that
while the most rapid cannon shots
scarcely attain a velocity of six hundred
meters second, over fifteen hundred
knots per hour, meteorites are known tc
penetrate the air with a velocity of forty
thousand or even sixty thousand meters
per second, velocity which raises the
air at once to temperature of A, 00C
degrees to 6, 900 degrees cent.
Electricity has at length been turned
toward the propulsion of an ordinary
carriage. At Brighton, England, lately,
dogcart with -half-horse power
motor, and with accumulators equal to
six hours work, was shown in opera
ton. The vehicle will 90 nine miles ar
hour OH asphalt and four miles on an
ordinary macadamized road 1t is mol
of much account climbing hills.
We see it stated that the Chicago,
Milwaukee & st. Paul II. r., has under
consideration plan for working some
forty pneumatic gates at crossings in
Minneapolis, Mimi, by an air compressor
in the shops. A pipe line will tap
storage and equalizing reservoir in each
cabin, and connect with the compressor,
and cooling and drying tank in the shops
1t is not proposed to lay the pipe below
frost.
The latest idea in the direction OF
waterproof foot wear is a shoe made with
: a stout calfskin vamp, seamless, underly-
ing which is vamp of thin rubber,
and between it and the lining, which is
of stout canvas. The bottom of the shoe
has rubber interlining between the
outer and the inner soles, and thus tie
shoe is about as near waterproof as o
leather shoe can be. 1t is said to wear
we'll and preserve its waterproof qualities
for an indefinite period.
Some instantaneous photographs OF
bullets in motion have recently been
taken in Germany by Herren Mach and
p. Salcher. The object of the expert
ment was to determine the waves formed
in theair displaced by the motion of the
bullet. Experiments were, therefore,
made with the Werndl cal bine, giving a
velocity of LILO feet per second and the
Guedes rifle, with velocity of 1, 100 feet
per second and with these very distinct
photographs were obtained, showing in
the clearest possible manner the character
of the waves set up by the bullet in its
passage.
Veneer manufacturers having been put
to much trouble and expense to secure
from the natives of Persia, or from French
markets, even, fancy wood burls from
which 10 carve out veneers for manufac-
turing purposes, have demonstrated by
recent experiments that red wood stumps
possess meritorious qualities for such use
and will undoubtedly be substituted for
the more costly woods in the future.
The demand for burl and curly red wood
for finishing work has already reached
large proportions in the West The
large butts of trees now being slain in
California forests will be used to a great
extent.
Indian Engineering announces that
remarkable engineering feat has just been
carried out in China in the face of un-
usual physical obstacles. This was the
stretching of steel cable Of seven strands
across the Iuan river by Mr.. A. de Linde,
Danish civil engineer, aided only by
unskilled Chinese labor. The cable is
strung from two points, GAS feet apart.
The height of one support is 447 feet
abore the present level Of the river, and
the second support is 737 feet above it.
The 'ertex over the water is 70 feet.
The Chinese cable is the largest but enc
in the world.