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Collection: Books and Periodicals > Mining & Scientific Press
Volume 24 (1872) (424 pages)

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Page: of 424

246 SCIENTIFIC PRESS} [April 20, 1872.
Steam Communication and Engine
Power for Isolated Mines.
The large number of enterprises recently introduced to the notice of British capitalists, and connected with the development of the enormous mineral resources
of the far western portions of the United
States, has led to many inquiries as to how
it happens that men so admittedly acute
as the Americans should offer valuable
mining concerns in the English market
instesd of retaining them for themselves,
and the almost invsriable confirmation of
the vendors’ statements as to the intrinsic value of the minerals by independent
English engineere to clear up the mystery.
The facts, however, are extremely simple.
Most of the mines are situated so far from
railways, etc., thatitis not profitable to
earry the ore to market, and the necessary
plants and machinery cannot be got to the
mines without far larger capital than the
ownere have at their disposal, especially
where, 28 in many cases, the mines have
been heavily encumbered to obtain the
requisite funds for prospecting and proving the mine; but when once the mine is
furnished with a good park of machinery
there is nothing to fear, for as bullion is
carried at the same price per ton as ore,
the profits on sending it down are ample.
The profits earned by the companies
already on the English market have been
eminently satisfactory, yet most of the
mines would have been far more advantageously placed had they had facilities for
cheap and rapid transport, and for the
erection of ample machinery at the mines.
In countries so thinly populated as Utah,
Colorado, New Mexico. eto., the construction of railwaye must, for sometime, be so
limited that comparatively few will be
benefited by them; but now that it has
been demonstrated that a speed of 20 miles
an honr can be obtained with a traction-engine of eubstantial coustruction, there is
no reason why any mine within 1,000 miles
of a railway should not be brought within
forty-eight hours of established communications, especially when the route is
through fertile valleys, where there is an
abundance of fuel and water to keep the
traction-engine going. With snch means
of communication there should be no difficulty in keeping the mines well supplied
with materials, without much additional
expense, as compared with the prices paid
at the nearest manufacturing cities.
In mining operations, moreover, considerable advantage results from plenty of
steam-power being at disposal, and in providing thie (aided by modern inventions)
a mine a few hundred miles from a line of
railway is really no less favorably situated
than one buta few miles distant. Tube
boilere, no part of which weighs more than
% ewt., are eo easily conveyed on the
backs of mules, or even of men, when absolutely necessary, that steam equal to 300
or 400 horse power can be readily had in
the most isolated district. With boilers
of this classthe quantity of steam generated
depends simply upon the number of (say)
60 tb. tubes used, and as all of these are
filled with water, andincommunication with
one and the same steam chamber, which
may consist of a tube capable of bearing a
maximum pressure per square inch, explosions, with their attendant delays, are
almost impossible. Assuming a tractionengine line to be established between the
mines and the railway (and thie really involves but the ontlay for the price of the engine), carriage of boiler sections and parts
of engines would offer no difficulty whatever, and all delays in putting such mines
in profitable operation would be at an end.
In Australia and South Africa there is,
the great difficulty arising from the absence of water and fuel, but on the Pacific
elope of the United States there is abundance of both, so that the eetablishment
of good traction-engine lines in those
regions would be alike advantageons to
the minersand remunerative to those supplying the capital to purchase them.—London Mining Journal.
Farsine Onn Hunprep Yrars Aco.—
In 1790, Franz Fuse, of Bohemia, one of
the authorities of hie age, spoke of the
prevalence of the inventive spirit, which
he donounced. He was himself a witness
that ‘‘ the folly had been pushed to euch
an extent” that people were tryingto make
eowing and reaping machines. But he
“thanked God” that the farmers had still
some judgement left, and thus these stupid
efforts to get something new met with their
proper reception—neglect.
Tux stock of mill iron ie lower than it
has been for years,
Gould and Curry Improvements.
The Gould and Curry Company, says
the Virginia Enterprise of the 4th inst., are
making very extensive and important improvements at their main shaft. The old
hoisting frame and all connected therewith
is being taken down preparatory to the
erection of new and more powerful and
substantial hoisting machinery. The
works were shut down day before yesterday for the purpose of making this change,
and the new works arein such a state of
forwardness that they will be ready to start
up in about ten days from the present
time. A new and most substantial fireproof building of etone and brick, forty by
eighty feet in size, is being erected over
the Bonner shaft, and in this is now being
set up anew and powerful hoisting engine. This engine is of the same capacity
as the large new engines in use at the
Crown Point and Belcher mines, and it
will be used for hoisting up from the new
incline about to be commenced below the
1,500-foot level. All the machinery is very
heavy, the fly-wheel weighing 6,200 pounds,
the spur-wheel 9,600 pounds, and all else
in the same proportion. The opening for
the commencement of the incline is completed, and now stands the largest untimbered cavity on the Comstock range, being a grand artificial cavern forty-two feet
wide by sixty-five in highth. But that
this work is done in hard blasting-rock it
would be very nnsafe to make so large an
opening without socuring it with heavy
timbers.
The bottom of the Gonld and Curry
shaft is now lower than any other point
reached by the Comstock. The bottom of
the shaft is 1,800 feet below the surface,
and below this has been eunk a sump
twenty-one feet deeper. At the bottom of
thesump has been blasted out, to the westward, in the solid rock, a reservoir capable
of holding 35,000 gallons of water. The
bottom of the shaft and bottom of the
sump are perfectly dry, but it was thought
best to make the reservoir in order that
any rush of water (from anysource) could
be controlled. It is not likely that they
will ever be troubled with water from below, but in ease of accident to the pumping
machinery that above might flood the incline, in case no receptacle for it was provided at the bottom of the shaft. The
new building will be covered with an iron
roof, and every precaution taken to guard
against fire from the row of frame buildings standing immediately to the west.
An improvement worthy of note in the
sheaves of the hoisting frame, over which
the wire cable will run, is that they are all
lined with wood. This improvement was
the suggestion of Mr, Lackey, Superindent of the mine, and is one which will
doubtless be adopted in all our leading
mines. The cable running over wood, instead of iron, will prevent the weakening
of the strands by eryetallization. Workmen swarm about the shaftand everything
is in such a state of forwardness that we
have no doubt of the new works being
ready to start up at the time mentioned.
Legends of the Yellowstone.
Here, the trappers tell us, is the ‘‘mother region” of the gold, where the Indians
told Father de Smet it was found on the
surface. Here are the burning plains, so
testifies Bridger, at the head of the Yellowstone, and large lakes, and boiling springs
like the geysers of Iceland. Here he eaw
his Two Ocean River, which, after flowing
for some distance, eeparates into two
large etreams—one traveling to the Atlantic, the other to the Pacific. In one of
these vales is a large tract of sage brush,
every leaf and branch perfect, and here
and there are rabbits, sage hens, and even
Indians, all turned to solid etoue. Il
fares it with whosoever penetratee these
mysteries, for the genius of the place at
once adds him tothe group of statuary.
More wonderful still—and our trapper
told it with great awe—these bushes bear
rare fruit—thousands of rubies, sapphires,
diamonds, emeralde large as walnuts. ‘‘I
tell you, sir,” said one veracious narrator
to Captain Reynolds, ‘‘it is true, for I
gathered a quart myself, and sent them
down the country.” A party of whites
were once hotly pursued by Indians, and
could only travel by night, when they
were aided by the brilliant light shot from
a huge diamond ina neighboring mountain, by which they traveled on for three
coneecutive nights. Here once an old
trapper was loet on his road from Fort
Laramie to Taos, and wandered for many
days; and in drinking from a stream
found pieces of yellow metal large as hazel-nuts which he carried to Taos and
found to be gold. He spent many years
seeking the place again, but in vain.
These and many other legends and traditions of these regions the trapper gave us
as truths familiar in the mountains as
household words, which it would be impiious to doubt.—Lippincott’s Mag.
Gone of Sequoia Gigantea.
This Sequoia is a native of California only,
and though ranked among the tallest and largest of trees, its seed bearing cones are among
the very smallest of all the conifers. The trees
are found principally in Calaveras, Mariposa
and Fresno counties, but are seen in a few
other placer’in the Sierra Nevads. They attain a hight of between three hundred and four
hundred feet, with diameters from one inch at
a year old, to 87 feet, or 112 feet in circumference at the base of the trnnk.
There was one tree in the Calaveras grove
that when first discovered was prostrate, that
must have messured when in the vigor of its
growth very nearly 450 fcet high. The grove was
first discovered by one of a party of American
miners on a hunting expedition in the mountains in 1850. The seeds have heen widely
disseminated and the trees are now found growing luxuriantly in nearly all parts of the United
States, England and many places on the European continent, apparently as healthy and vigorous as in their native soil.
The illustration herewith given shows the
natural size of the cones.
California Pears in Europe.
C. W. Reed, of Yolo county, last fall asa
matter of experiment shipped several hoxes of
Easter Beuree pears to different points in England. Some to London, some to Glasgow and
some to Liverpool. The pears were shipped
late in the season and were in the snow blockade on the railroad from three to four weeks.
Some went hy the way of Boston, and some by
the way of New York.
He has lately received an account of the experiment. The pears sent by New York arrived in perfect order, and condition; while
those sent by Boston had apparently been
touched by the frost and were in rather poor
condition.
Onthe whole, the experiment is regarded by
Mr. Reed as a perfect success, and proves that
California pears can be laid down in any of the
above named cities in a good merchantable
condition. It also satisfies Mr. Reed thst pecnniarily the husiness will pay.
In_ confirmation of the above, B.S. Fox of
San José, sent some pears to Ireland, his old
home, and although it was a small shipment to
friends, it proves that the frnit can he shipped
and arrive in good condition. These experiments are of great valueto our State. We have
already a large market in the Atlantic States
for our fruits, and particularly for pears, hut if
we can supply England with her millions of
people, with our delicious pears at remunerative
prices, we have a market literally beyond our
ability to supply. Our fruit growers will make
a note of the above facts.
Dr. Franeniy’s Toast.—Dr. Franklin
once dined with the English and French
ambassadors, when the following toasts
were drunk:
The British ambassador said:—‘‘England
—the eun whose bright beams enlighten
and fertilize the remotest corners of the
earth.”
The French ambassador, glowing "with
national pride, but too polite to dispute the
previous toast, drank : —‘‘ France—the
moon whose mild, steady and cheering raye
are the delight of all nations, coneoling
them in darkness, and making their dreariness beautiful.”
Dr. Franklin then arose, and, with his
usual dignified eimplicity said:—‘‘ George
Washington,—the Joshua who commanded the eun and the moon to stand still, and
they obeyed him,”
Animal Power.
_ Enrrors Press:—Allow me to ask the following questions, viz.:—
ist. Working a horse or an ox all day, how
much-taking in account their respective
weight—can Rie pull and not be over worked ?
2d. What is equivalent in the working capacity of three oxen, in horse power ?
3d. Pound for pound, which will pull most
easily, a desd load, like corn, or a springy one,
like hay ? TFB.
Marengo Ranch, Los Angeles Co.
In the foregoing qneries there are a few nice
points involved. We once took a contract for
hauling wheat by the ton a distance of ten and
a quarter miles over a generally level road, but
with 2 or 3 elevations and depressions of about
a fourth of a mile in length each, and of about
equal ascent and descent; other than this, the
road was hard and good. We put on two new
wagons of the same size and weight, and made
hy the same man. To one {wagon we puta
pair of large common farm horses, and to the
other a large, good yoke of oxen,
‘We commenced by hauling a single ton on
each wagon, every day with no return load but
the empty wagons. Both horses and oxen were
fed an equsl quantity of ground feed each, and
all the good hay they would eat. Both teams
left at the same hour in the morning, but the
horses would arrive home three hours the first,
heing able to trot most of the way returning.
The distance both ways amonnting to twenty
and a half miles a day; we found at the end of
a single week that the horses—to use a farmerg’ phrase—held their own, whilst the oxen
were losing weight and suffering from] fatigue,
as they would lie down, almost immediately on
being turned out, and sometimes before they
had finished their food.
We now hitched on another yoke of oxen,
nearly equal in strength to the first; but the result after another week was the same; the four
oxen were more fatigued than the two horses
drawing equal loads and changing wagons every
day from horses to oxen, so that any differcnce
in case of draft would he equalized. It was
evident, therefore, that the distance traveled,
was what was worrying the oxen and not the
weight of the load. We now puttwotons upon
the fwo yoke of oxen and wagon and taking one
dsy to go and the next to return; the horses being loaded and going daily ss before. After
two week’s work, the oxen doing the,{same
amount of work as the horses in the same time,
were cvery day improving till the job was completed.
During the whole time, the load for the
horses was an cven ton weight or averaged that
day by day; and with thst load, it required full
feeding with ruhhing down and much care, to
keep the horses up to their starting condition.
On all good roads we should prefer horses before oxen; but in all bad places or in timbered
land, where the labor is logging or getting
around among brush and bad places with
stumps and rocks or mudholes, the paticnt ox
is to he preferred.
An elastic weight, as feathers or unpressed
hay, against a dead weight as corn.or lead,
pound for pound, the elastic materia] will draw
the easiest. First, because the whole load of
the elastic substance does not start at the same
instant, and it is easier to start half a load than
the whole of it at once; and secondly, hecause
the elastic load will allow of the wheels rising
over short inequalities or small stones without crushing them, which if it did crush them
would reqnire extra power, because, with the
dead weight you would expend the same power
in drawing the load proper, and the additional
power required to crush the stones. If our
correspondent should hold to a different view
than we have expressed, we would be pleased
to hear from him.
Vatue or Stow Resapive.—Frederick
W. Robertson, the distinguished Englieh
preacher, once wrote toa lady friend: “1
never knew but one or two faet readere,
and readers of many booke, whoee knowledge was worthanything. Miss Martineau
saye of herself that ehe is the slowest of
readers—eometimee a page an hour. But
then what she reads she makes her own,
Girls read too much and think too little.
I will answer for it that there are few girls
of eighteen who have not read more booke
than I have; and ae to religioue books, I
can count upon my fingers in two minutes
all I have ever read. But they are mine.’
Tus President of the Northern Pacifio
Railroad company denies the statement
that a quantity of railroad iron had arrived
in New York from England for the above
company, and says that it is the intention
to use none but American iron on that
road.