The Bossier banner., 1891-08-13
SCIENCE AND INDUSTRY.

The commerce of New South Wales,
one of the Australian provinces, in pro-
portion to it's numbers is three times
that of Canada, five times that OF
France, and eight times greater than
the trade of the United States.
1t is said there is tract of forest
trees in southern Oregon embracing
| about 10000 square miles, which, cut
and sold at SO per 1000 feet, would pay
our national debt twice over. 1t is es'
timated that the amount of merchant
able timber standing will reach AGO.
900, 900, 900 feet.
What is called the "scent farming"
industry is fast growing in Importance
in the colony of Victoria. 1t consists in
the cultivation of plants and flowers
which yield perfumes that have COM
mercial value. The climate and soil of
Victoria are particularly well suited
for the cultivation of scent-produeing
plant.
The author proves that parasite
growing on plants of the Strychn0s
genus contains neither strychnine nor
brucine. The mistletoe growing upon
the oak does not contain the tannin of
the latter, but exclusively a green tan
min. In like manner other parasites are
shown not to absorb the peculiar prin-
ciples of their hosts-A. Chatin, in
Scientific American.
The most extensive salt mine is in
Wieliezka, near Cracow, Austria-Hun-
gary. For six hundred years it has
been constantly worked, and from it
5000 tons of salt are annually taken.
The mass of salt in it is estimated to be
500 miles long, 20 miles broad and 200
feet in depth. It's collective galleries
are fully 80 miles in length, and its
lower level contains streets and houses,
making it a complete underground vii
lage.
I The velocity of sound in air at low
temperatures has recently been meas
/. ured by determining the interval be-
I tween the flash of a gun IL meters dis.
tant and the report. For temperatures
e 1919 degrees, 25.7 degrees, 37.S degrees,
, and 45.6 degrees below zero (centigrade)
9 the velocities were 326.1 1, 317.1, 909.7 and
+ 8056 meters per second. From this il
K appears the velocity of sound diminishe:
o 0.6O2 meter per second for each degree
o (centigrade) or rise of temperature
+ Topeka Capital
o -Salamanders and toads have, &C
s cording to Herr Schultz, a German
e naturalist, not only mucus glands al
|. over their skins, but certain poisor
e glands on parts of the back and limbs
e and bshind the ears. These glands per
is form q protective function, and emf
q a corrosive juice, which can be detected
r with opper-h@matoxylin. In the sala
e mander the poison is spurted out Oh
e stimulation, but in the toad it slowl!
h exudes.
n The lobster is greatly in dread 0
v thunder, and when the peals are YER
IS loud numbers of them drop their claw
and swim away for deeper water. An
Il great fright may also induce them t
" drop their claws. But new claws begi
% at once to grow, and in short time ar
a as large as the old ones, and covere
d with hard shells. The lobster ofte
to drops it's shell, when it hides until tn
IS new shell is hard enough to protect il
rs Two cases of pneumonia, as a re
" suit of conclusion of the lungs, hav
se been reported. A boy of eleven, VIII
a was forcibly struck on the left side {
te the chest with hatchet, began to coug
y about two hours later and soon deve
~ oped the symptoms of pleuro-pneI
m monia at the base of both lungs. A ma
ra of TWENTY-FIVE, who strained his rigl
ve side by trying suddenly to stop the ia
of of a sack of malt developed all tt
Mt signs of pnemonia in both lungs andd
th 1t is reported that the observers
ca Mount Hamilton have lately kept
,t- sharp eye turned upon the shadow
,ot one of the moons of the planet Jupite
M This shadow seemed double, indicatiI
rb that the tiny moon which cast it is al
al double. Since the first hint of the di
go covery many observations have be'
made through the Lick glass, all ten
s,,. ing to confirm the original impressio
his to-wit: That this particular satellite
std the greatest of the planets is double
is dot of a moon revolving around t.
ast main moon.-Popular Science News.
90. The Canadian railways operated
nv. the government do not seem to be We
10. profitable concerns. The Ottawa FIR
nd Press remarks: According to the !
me port of the minister of railways for Is!
Tho lust issued, the Intercolonial railwa
YES the cost of which was estimated by t
ant original promoters at S21, 100000, b
or. already cost the country $40, ,542, 9s7, {
his elusive of the aggregate of deficits
ted its operation, and the capital account
esi- not yet closed. The receipts of
the railways operated by the governme
inf last year amounted to So, 206, ,S74, wh
the the operating expenses reached s., ,S+
ing O44' le@Vlne d oenclC u @O1-, l'O'
try A Monstrous Prehistoric Man.
5 OF Two miners who recently return
J OF from Grand canyon, Arizona, repor