, 1878-04-24

sC!EN NrFIC NOTES.

European bees UccOme idle and worth
less in Aust'a in.
France produces 53l pounds "i sugar
ucets for every head ct population.
The latest British torpedo invented
will travel through water at the rate ot
lorly miles an hour.
Clock k.work has been successfully ap-
plied as a motor to sewing machines 10y
Il Me, h nj ian of Venice.
NJ. Ararat is about seventy or eighty
miles in circumference, and the higher Of
the Two p, axis reaches an elevation OF
1900 feet.
II the battle fields are not disiHiected
the health OF Europe will be threatened.
At Tihis there are 10000 corpses buried
only two feet under ground. They will
he cremated probably.
Morele: in the published account OF
his travels through Central Ameaiea, de
scribcs a ,ake in the province of petro,
Guatemala, eighty miles in circumference
without any outlet, but perfectly fresh
The annual geld product of the would
is probably greater than silver by about
$4,000, ,000 and there does not appear to
beany well founded reason why this pro-
portion should materially change, at
least during the present generation.
Kangaroo hides have already become
an important article Of commerce from
Australia, They make the most pliable
leather that is known, admirably fitted
tor boot legs, gloves end riding whips
The skins are sent to Europe, some tann-
cd and some simply dried
The natural pearl banks Of Ceylon are
threatened with rivals by the establish,
ment OF artificial beds where the breeding
and rearing OF pearl bearing oysters may
be carried on like an ordinary occupa.
tion. Such, ut least, is the prospect
opened by the experiment OF Lieutenant
Marriott of the French navy, who has
proved that this species Of bivalve will
both produce pearls and reproduce its
species quite as well in captivity as in
the open sea, ~
The outer satellite of Mars is described
rs being of .. red color, like the planet
itself, by Mr.. Common, fellow of the
Royal Astronomical Society, whose OBJ
servations have been made with an
eighteen inch, silver glass reilec.ing tele-
scope. Both satellites are now. invisible.
and will remnn so till theAhtumn OF 10
when they may possibly be detected with
the best telescopes. Alter that ten years
must elapsc during which there is but
little probability that they can be seen
at all. @ssFeabf 4
The arts of utilization have now been
extended TO the eytracuor of oil from
the waste leather offactories7 belts,
cards &C., which are usually thrown
aside as worthless, becoming as they do,
so saturated with oil as to render their
further use impracticable, thus resulting
in serious loss to manufacturers. The
new process of utilzat OF not only re-
stores the leather to usefulness. but the
oil that is extracted from il becomes
useful as lubricator, much superior for
this purpose, in fact, than fish oil On
removing the teeth from the old cards,
the leather is subjected, under great
pressure, to peculiar preparation, and
in very short time, say about twenty
minutes, is restored as clear as ever, free
from oil, and the holes made by the
teeth all closed, This leather it is found
may be used for various purposes, such
as sub rolls, betting, burr wheels, harness
and in some instances made into hose.