The Bossier banner. [volume] (Bellevue, Bossier Parish, La.) 1859-1952, 1889-10-17
SCIENCE AND INDUSTRY

tricity it has been pointed out that ex-
treme care is necessary, especially when
negative electricity is used.
"A new English arc electric lamp
has the upper carbon fed by means OF
an electric motor. which drives a worm
and a train of gearing.
According to Prof. Thurston the
engine of the future is that which ulti-
mately can be made to work up at once
to high temperature aud to high press
ures, and can be made at the same
time to develop its powers in the small
est and lightest engine.
Some experiments lately made at
the Royal Polytechnic school at Munich,
show that the strength of camel hair
betting reaches 6,915 pounds per square
inch, while that of ordinary betting
ranges between 2.230 and 5, 260 pounds
per square inch. The camel-hair belt
is unaffected by acids.
Out of 106 persons treated within
period of eleven months at the Pas
teur Institute at Rio de Janeiro only
one died, and that one had neglected
to follow the treatment as directed. In
sixty-two of these cases the dog by
which the patient was bitten was un.
questionably mad; in the others it was
impossible to determine positively the
dogs condition.
Ordinary filters. en- if satisfac-
tory as strainers, fail to remove all
bacteria from drinking water. SO far
from lessening the number in the
original water the filtering substance
may allow a more rapid multiplication
than these micro-organisms would
ordinarily undergo in the unfltered
water on standing, and the germs OF
disease, even if held back by the filter
ing substance, may be harbored in all
filters.
1t appears that, though the first
attempts at cultivating the American
cotton three in Central Asia proved
unsuccessful, a new attempt, made
since 1884. under the leadership
of the Tashkent model farm, and with
seeds taken from America, has proved
to be real success. In 1887 there
were no less than 38, 700 acres under
that crop in Turkestan, aud in the fol-
lowing year the area was trebled.
The crop of 1851 was estimated al
$1,000 cwts. of raw cotton.
The existence Of libraries and
schools before the exodus was shown BY
report at a recent meeting of the Vic
toria Institute in London. Professor
Sayer, by personal investigation of an.
cient tablets and inscriptions, found that
in the fifteenth century before our era
active literary intercourse was going
on throughout the civilized world OF
western Asia, between Babylon and
Egypt and the smaller States of Pales-
tine, of Syria. of Mesopotamia, and
even of eastern Cappadocia. This in
tercourse was carried on by means OF
the Babylonian language and the com.
plicated Babylonian script.
There is but little doubt that
aluminium is destined to be the metal
of the future, and will displace iron
and steel as surely as electricity is dis
placing gas and steam. Aluminium ex-
lists wherever there is clay bank.
Formerly the cost of reducing it to
metallic form was excessive, but now
the electric current is utilized in its
production, which is daily being
effected at a cheaper rate, Aluminium
is a soft white metal which never rusts.
1t is little more than one-third the
weight of iron, and, combining welt
with other metals, it becomes, when
alloyed with copper. harder than steel
Some novel processes in the manu-.
facture of paper have been suggested,
and it is ascertained by experiments in
this direction that the strength of paper
is materially increased by the employ
ment of sea weeds, which form with
water-certain kinds OF them in par.
ticular-glutinous liquids; resin soap
and aluminous cake or compound may
also be advantageously added, under
certain circumstances. Experiments
also show that very bright surface
may be given to paper by the following
simple method; A very concentrated
cold solution Of salt is mixed with dex.
trine, and thin coating of the fluid
laid on the surface of the paper, by
means of a soft, broad brush, and it is
then allowed to dry. The most desir.
able salts for this purpose are sulphate
of tin, sulphate of magnesia, and
acetate of soda, and size papel is also
essential.