Amador ledger., 1908-10-16

a novel method of working on the
sea bottom is provided by the salvage
apparatus to be tried near the Hol-
land coast in an attempt to recover
part of the 50. 800, 600 that was sunk
in British ship in 1877. A steel
tube, large enough for man to walk
through and about 100 feet long, has
at one end metal chamber with win
dows and doors, and at the other end
is arranged 10 clamp to the side of
vessel. Divers will walk down the
tube to the cham ber, from which
they can emerge to the sea bed
through a system of air compart-
ments. Powerful suction pumps at
the side OF the tube will suck away
the sand until the sunken deck is
reached, and as treasure is sfound in
the hold the divers willStransfer it to
the chamber of the salvage tube. An
engineer in this chamber will direct
the divers by telephone.
An indelible ink tree, known to
botanists as Semearpus anacardium,
is chiefly found in India, but grows
also in North Australia and the West
Indies. Its nut supplies the natural
marking fluid. When dried for COM
merce, the nut is heart-shaped and
nearly black, and contains q black
vlscid juice. For marking linen or
cotton this juice is mixed with
quicklime. 1t can be made into
marking ink by treating the nut with
a mixture of aclohol and sulphuric
ether, and is also used for black
varnish.
Ihe smokeless fuel of a London
inventor is produced by mixing two
parts by weight of bituminous coal
with one of peat, and heating in a
retort to $50 degrees f.. The fuel
yielded has high caloriio value,
ignltes readily and IS economical.
The vapors driven off containing the
sm moke-forming hydrocarbons, are
condensed, and yield superior pitch
and other valuable products.
Balloon sickness and remedies for
it have been su bject of experiment
by Crouzon and Soubies, French
biologists, in an ascent in which a
height of about Is, 600 feet was reach
ed in four hours. The remedies test
ed we're inhalations of pure oxygen
and OF AgazottIs mixture for
aeronauts, consisting of 81 per cent
of oxygen and 13 per cent of car bonic
acid The first sickness was felt at
height uf 1890 feet, when one
observer was attacked by pain in the
back OF the head and nape of the
neck, which was followed by conges-
tlon OF the veins of the face, mist
before the eyes, and heavIness of the
eyelids; at IA, 8UO feet the breathing
became painting, and on trying to sit
down the observer fell to the bottom
of the car; and at 10, 750 to IL, 400
fatigue and drowsiness caused lapse
of consciousness, questions being un-
answered. On being relieved by gas
the symptoms returned after a short
interval, occurring six times in ali.
The pure oxygen and the mixture
gave equal relief at first; at 10, QUO
feet the mixture removed the distress
in breathing in 10 seconds, the car
bonio acid seeming to stimulate the
respiratory center; but at 10000 feet
only pure oxygen had any effect.
Above 10000 feet disagreeable symp-
toms were avoided by continuous in
halatIop of gas,
a net of line resistance wires woven
together with pure asbestos strings
is the efficient heating unit supplied
by Westphalia manufacturer tor all
kinds OF electric heating apparatus,
such as car-heaters, foot warmers,
hot-plates, medical appliances, etc.
Long heating causes no deterioration.
For car heaters several nets are
mounted in parallel. being bolted
together with small porcelain in
sulators between; but for hot-plntes,
ETC., single net is insulated be-
tween the metallic surfaces by sheets
of perforated mica.
A recent 1ower-show at Regents
Park, London, included 1000 varie
ties of roses, and it was stated that
450 new varieties have been added to
the great rose family in three years.
A nearly black rose was shown, with
the assurance that the long-sought
blue rose would be brought out soon.
The pIeatest Vitality and lowest