Frostburg mining journal. [volume] (Frostburg, Md.) 1871-1913, 1886-01-30
SCIENTIFIC AND INDUSTRIAL

The tin deposits of New South Wales
cover an area of 5,440,00 acres, and
probably much more than that. The
present production is mainly of the allu-
vial mines, but lodes have been opened
at Elsmore, Newstead, the Gulf of Jing
clio and Tingha. All of the minerals
found associated with tin stone in other
countries are associated with it there and
comprise iron pyrites, topaz, copper, gar
net and malachite.
An interesting experiment has been
made in Germany with compressed paper
capable of high polish--as material
for piano-cascs. The tone of the instru-
ment is reported to be not loud but very
sweet; and, unlike the short broken note
of the ordinary piano, the sound is soft,
full and slightly continuous, resembling
somewhat that of the organ. The modi-
tication of tone is ascribed in the even
ness of texture of the compressed paper.
Near Burgbrohl-on-th the Rhine bore
hole about 175 feet deep yields large
and steady supply of carbonic acid gas,
which is now compressed in wrought iron
vessels and used for various purposes. It's
enormous expansion is employed by
Messrs. Krupp at Essen for COMPRISING
steel and other casts, and it is also
utilized for impregnating beer and
natural water for fire extinguishing
apparatus, as a motor force for torpedoes,
etc.
In looking over a lot of japanese tools
recently we observed carpenters saw,
says an exchange. These saws all cut on
the pull stroke, and not on the shove
stroke like our own. 1t is said to be
rather more difficult to saw to line, but
nevertheless they have their advantages,
as they will not buckle or bend when
they strike knot, or are crampcd from
any cause. The pull stroke of 5000
years ago Is the best for thin and mar
row saw blades.
In his new work on anthropology To-
pinard says that there are only two types
the blonde and the dark; that the
other so-caled types yellow and red in
particular only in very minor de-
gree serve to distinguish races. and that
the color as a rule is an uncertain charac-
ter, liable to alter in individuals and diff
ticult to determine and express. AS a
concession, however, to the general prac-
tice, he gives table of classification of
races by their color under the three de-
nominations white, yellow and black.
In an article on "The Use of Oil at
Sea-" by Lieutenant John p Holditch,
r. n. r., the author says: 1.-The results
l have obtained are these: Fish or COLA
oil only is of any good; it does not mat
ter how dirty it is as long as it is not
thick. Paraffin is too thin; paint oil too
thick. Running before a gale naturally
expends much more oil than laying to.
you have so much more water to oil.
Carefully expended, one quart in three
hours for running and one pint in four
hours for laying to will be sufficient.
The means l used was canvas bag (No.
o., with large holes stabbed with a
needle. | have heard of bundle of
oakum being saturated with oil and then
put in Il coarse gunny bag, which l think
would admit of thicker oil being used
for the time. The place for towing is
undoubtedly forward, not aft. Whether
in head-rcaching oil could be usel sue,
cessfully | cannot say, but l doubt it.
When running dead before the wind, tow
from each cathead, and the ship is as safe
us anything can be at sea"