OBSERVATIONS

On the National Importance of Mineral Possessions, and the Cultivation

of Geological Inquiry.

The importance of the metallic ores and other mineral substances,

considered as instrumental in the advancement of national prosperity,

is obvious to every one. In announcing that a certain country

possesses extensive and skilfully worked mines, either of coal, of

iron, copper, tin, lead, or other of the numerous ores, we at once

proclaim her wealth in terms that all must understand. They are

readily perceived to be essential to the prosecution of the various

arts and manufactures that flourish in the present age, and to form a

fruitful source of wealth to the country in which they happen to

abound.

The facility, however, with which one nation can procure these from

another, owing to the free intercourse and system of exchange

subsisting between them, which thus enables a country, barren itself

in mineral treasures, to attain a respectable rank among the wealthy

nations of the earth, occasions us to assign to the possession of them

within our own soil, an importance infinitely less than is due. We are

disposed to consider them too much in the light of mere articles of

export, and valuable, chiefly as commodities of exchange: or, if we do

not bestow too much consequence on their exchangeable value, we at

least allow too little to their intrinsic worth. Yet, when we assign

to the products of the mineral kingdom their proper rank in the scale

of national blessings, they take their place beside that of a fertile

soil, or a salubrious climate,--blessings we may still enjoy, though

we adopt the exclusive and selfish policy of ancient Egypt, or of

modern China. In short, we should value these mineral productions, not

as we value one of our great staple commodities, tobacco, on account

of its nominal price, but on their own account--not by the gain

derived from parting with, but that derived from keeping them. Nor

should we confine our solicitude to procuring now, on the easiest

terms, the means of supplying our immediate wants; but with a more

comprehensive view, look forward and provide for the period, when the

growing wants of the unborn millions destined to people our almost

boundless territory, will create a demand for these substances, in

quantities which either foreign nations, with comparatively exhausted

mines, will be unable to supply, or to purchase which, we must

appropriate that produce (the produce of a large portion of the

surface of the soil,) which should be devoted to the more legitimate

purpose of furnishing to its inhabitants the means of subsistence and

employment.

We are apt too to forget, that were it possible, with or without the

intervention of war, for a people to be cut off from all intercourse

with other nations, and to be destitute themselves of mineral

resources, that their very existence, at least as a civilized people,

would be next to impossible. That the different degrees of refinement

attained by the human race in different periods of antiquity, are

marked with a precision sufficiently distinct, by their acquaintance

with the metals, and the uses to which they are susceptible of being

applied: and, that nearer our own times, the aboriginal inhabitants of

our own continent were found existing in a higher or lower stage of

progress towards civilization, in proportion to their knowledge or

their ignorance of these substances.

To trace a little further, the connection of mineral wealth with

national prosperity, we may observe, that the wants of a people may be

said to be mainly supplied, when they are provided with food, clothing

and habitation, and they are better or worse supplied, according to

the nature and abundance of the materials they possess for the

fabrication of these, and the perfection of the instruments they may

have, proper for fashioning them into convenient forms. The nation

which can command for its subsistence, in greatest profusion, the

varied vegetable and animal productions, of whatever clime, that

constitute the necessaries and luxuries of life; whose well stored

magazines of merchandize furnish, for its apparel, the finest fabrics

and the richest stuffs; and which can boast, for its places of

dwelling, the most commodious, splendid and durable edifices, with the

various conveniences that necessarily keep pace with improvements in

these, may be said, physically considered, to have well nigh attained

the pinnacle of prosperity. Let us observe in what manner the mineral

substances to which we have alluded, contribute to accomplish this

end. Let us suppose man rude and barbarous, for the first time, to be

presented with that best of gifts--iron; and for the sake of

proceeding, let us anticipate the slow progress of events, and give it

to him in the form into which he would soon convert it--that of the

simplest implements. Instantly his habits are changed: his wandering

mode of life is abandoned: his abode becomes fixed, and he himself

devoted to labor. In a little time, the rugged face of nature is made

to assume a softened and a brightened aspect, and to smile upon him

with a novel beauty. The ample and ancient forest, his former range,

falls with continued crash, day after day, beneath the repeated stroke

of his axe: on all sides, broad and sunny plains open around him: the

broken soil heaved up to the influence of the atmosphere by his

plough, or stirred with his hoe, begins to yield in abundance the

fruits of the earth; the prostrate timber rent asunder by his wedge,

and hewed, sawed, or chiseled into appropriate shapes, furnishes

materials of building: these, arranged and secured by means of pins or

nails of the same material, rise in orderly succession one above

another, till there is erected for his habitation a comfortable and

commodious dwelling:--while the surrounding fields, now that he has

ample food in store for their support, are overspread with the flocks

he has domesticated, to provide for his use unfailing supplies of

clothing and subsistence. Already he has made himself acquainted with

the rudiments of agriculture, architecture and manufactures, and has

laid the foundation of the useful arts.

Compare his condition now, with that in which he existed before his

acquaintance with the uses of iron: contrast the savage of the forest

with the cultivator of the field--the scanty and precarious sustenance

of the one, with the regular and abundant subsistence of the

other--the covering of skin, with the garment of wool--the hut, with

the commodious dwelling--the hardships attendant on one mode of life,

with the numerous conveniences that follow as a necessary train to the

other; and from this rough-drawn and very imperfect outline, there may

be formed some slight idea of the revolution effected in the condition

of man, even by a limited acquaintance with the simpler uses of this

single, though most important of all the mineral substances.

It is scarcely necessary to direct the reader's attention to the

accession to the comforts, the conveniences, the elegancies of life,

or to the vast acquisitions to the power of man, which, in successive

periods of time, have been gained by a more extended and familiar

acquaintance with the various properties of iron, and the innumerable

purposes to which, with increased advantage, human ingenuity has

discovered it to be applicable. It is sufficient to turn the eye on

some great and populous city--the seat of busy manufactures;--on a

Sheffield, a Manchester, or a Birmingham,--those nurseries of the

arts, and workshops of the world: to view its immense establishments

in active operation, and look on the tens of thousands of the

industrious they maintain and employ. It is sufficient to hear the

eternal din and incessant roar of stupendous machinery, laboring in

the service of man, in obedience to laws and impulses he has given to

it;--to see its multifarious and complicated parts performing each its

allotted movement;--swinging heavily, with measured time, and force,

or shooting to and fro with regulated rapidity; revolving slowly, and

lazily around, or flying with inconceivable velocity, and whirling

smoothly, each in its proper sphere,--moving, all in harmonious

cooperation, to effect some beneficial end, with a precision

unerring--as if impressed with the intelligence and volition of

animated being. It is sufficient, to be convinced of the great

acquisition we have in iron, to witness the wondrous effects of the

steam-engine,--that giant machine, which performs to our hands the

labor of countless hosts; which enables us to penetrate into the

secret recesses of the solid earth, and to master the ocean, and the

very elements themselves. "It rows, it pumps, it excavates, it

carries, it draws, it lifts, it hammers, it spins, it weaves, it

prints;"--that masterpiece of human skill, which, in the language of

the celebrated Doctor Black, is the most valuable present ever made by

philosophy to the arts.

Again, when we behold materials of every known description, in the

rude state in which nature presents them, before they have been

subjected to the first elementary process in their manufacture, and

look upon them, after they have undergone the various mechanical

operations to which they are successively submitted, and are produced

in a finished state, of every form and fashion that can minister to

the wants, or gratify the caprice of man, we almost doubt their

identity, and are at a loss which most to admire, the utility of the

substance by means of which so wonderful a change has been effected,

or the sagacity of him, who moulds and constructs it into complicated

machines, to which he gives motion and almost life, to work out his

own advantage. And, lastly, when there is displayed before us the

endless variety of manufactured goods and wares;---of instruments, and

implements, and utensils;--of machines, and engines, and mechanical

contrivances to abridge human labor; when we gaze on the immense

fleets that wait to receive them, in an hundred ports of some great

manufacturing country, or survey the seas whitened with the sails, and

heaving beneath the burthens of whole navies, busied in transporting

them to distant and expectant nations, and even piloted in their

course, through the wide and trackless waste of waters, with unerring

accuracy, by a property peculiar to iron,--we turn from the

contemplation more fully persuaded of the extent to which we are

indebted to this single metal, to which in truth, if we except the

spontaneous productions of nature, (of little comparative value

unwrought,) we owe every thing we possess.

We are enabled, perhaps, by this review, hasty though it has been, of

the numerous and varied uses of iron, better to estimate its real

worth, and we do not hesitate to assign to it, an importance among the

elements of national prosperity of the highest order, and to consider

it, what truly it is, the most valuable of all acquisitions. We look

upon the country rich in the possession of its ores, with feelings of

rivalry, and are prompted to emulate her in acquiring this true

species of substantial wealth. Our national ambition is excited to

grasp at this mighty instrument of power, and our energies should be

roused into ceaseless activity, until, by untiring assiduity in

surveying and exploring our own tempting regions, guided by the lights

borrowed from geological science, we succeed in enlarging our mineral

domain to at least an equal extent.

Before proceeding to the consideration of any other of the substances

we have proposed to treat of, it may not be improper, here, to annex

(more in the form of notes) a few facts illustrative of the history of

the very interesting mineral which has occupied our attention in the

preceding remarks.

Of all the metals, iron is the most widely and universally

distributed, being confined to no particular formation as its

repository, but discoverable in every class of rocks, from the oldest

granite to the newest alluvial deposit. It is also the most abundant

of the metallic ores: whole mountains composed of it occurring in the

northern parts of the globe. As instances of the great masses in which

it is found, it may be mentioned, that the sparry iron ore found in

the floetz limestone in Stiria, has been worked to an immense extent

and with great profit, for more than twelve hundred years: and, that

the Rio mountain in the island of Elba, five hundred feet in height

and three miles in circumference, known at an early day to the Romans,

(in which mines are still wrought,) is wholly composed of specular

iron ore. Though this metal, as we have stated, exists in every kind

of rock and soil, it has been remarked, that the dark oxides or its

richest ores are confined exclusively to primitive rocks. The ores are

generally, it has also been observed, of a purer quality, and more

abundant in northern regions. What are denominated iron-stones, or the

ores containing a larger proportion of earthy matter, are found in the

secondary strata, and exist commonly in great abundance in those

accompanying coal.

Although iron was known in the remotest ages, and was in use among

some particular nations even at a time anterior to the deluge,

according to Moses, (Gen. iv. 22) we are not to presume it was in

general use:

"Him Tubal nam'd, the Vulcan of old times

The sword and falchion their invention claim;

And the first smith was the first murderer's son."

Nor must we forget, that the useful arts, and among them the art of

working metals, were lost to the generality of mankind, in consequence

of that universal calamity. Gold, silver and copper seem to be the

metals of which the knowledge and uses were earliest recovered after

that period; owing, no doubt, to their being oftener found on the

surface of the earth, or in the beds of streams--to their more

frequent occurrence in the metallic state, and to the greater ease

with which they are separated from their ores. Copper, though greatly

inferior to iron, yet possesses considerable tenacity, and sufficient

hardness to furnish a substitute in the construction of cutting

instruments, and either pure, or alloyed with tin to increase its

hardness, constituted the materials of which were formed the swords,

hatchets, and artist's tools of many ancient nations. The arms and

tools of the American nations were similarly made, and by means of

this awkward substitute, the Mexicans and Peruvians made considerable

advances in manufactures and the arts--greater perhaps than any other

people unacquainted with the use of iron. The inconvenience

experienced by these nations from their ignorance of this metal, and

the awkward expedients to which in consequence they had recourse,

afford an important lesson in teaching us what estimate to make of the

value of a substance, which, its very requisiteness to every common

purpose of life so familiarizes us with, as to cause us daily to pass

by with little or no notice. The evils which we are taught would

inevitably follow its loss, make a deeper impression of its

importance, than all the advantages, manifold though they be, which in

heedless enjoyment, we are continually deriving from its possession.

With no better substitute for iron tools in cutting stone, than the

sharp edged fragments of flint,--without carriages, or machines of any

kind,--how tedious and laborious must have been the work of separating

from the quarry, of shaping, of transporting to a distance, and

elevating to a proper height, the huge blocks of stone with which the

Mexicans and Peruvians contrived to erect their temples and other

public edifices!--structures that have commanded the admiration of

more modern nations. What toil and what time must have been expended

in the operation of dividing a single block, by means of continued

rubbing of one rock against another! What pains and what efforts of

ingenuity must it have cost the artizans of Montezuma, without the aid

of nails, to form the ceilings of his palace, by an arrangement of the

planks so artificial, as mutually to sustain each other! With what

eagerness the Peruvian would have accepted nails of iron, to fasten

together the pieces of timber he employed in building, and have laid

aside as worthless, the cords of hemp his necessities compelled him to

apply to that purpose! What an acquisition would have been even a

common needle, in the place of the thorn, to which, in the fashioning

of their cotton garments, they were obliged to have recourse!

Iron differs from the metals we have mentioned as earliest known, by

its occurring rarely in a metallic state, and being then most

difficult of fusion: its uses were in consequence a later discovery.

The methods, besides, of disengaging it from the ores in which it is

usually found in nature, are far from being obvious, consisting of

various processes,--such as pounding, roasting, smelting in contact

with charcoal, to render it fusible; requiring too, additional

heatings and hammerings to render it malleable, and a still more

complicated process to convert it into steel. Yet it was in use, as

has been remarked, in very remote ages: Moses, in Deuteronomy, makes

frequent mention of it. He speaks of mines of iron, and alludes to

furnaces for melting it; and from the circumstance of swords, knives,

axes, and tools for cutting stone, constructed of that metal, being

mentioned by the same authority, we are entitled to conclude that the

art of tempering and converting it into steel was also known. The mode

of tempering it was certainly known to the Greeks as early as the days

of Homer; for that poet borrows from the art some of his similes. Thus

in the Oddyssey:

And as, when arm'rers temper in the ford

The keen-edged pole-axe, or the shining sword,

The red hot metal hisses in the lake,

So in his eye-ball hiss'd the plunging stake.

It is by its conversion into steel, that we are furnished with a

material retentive of an edge, and adapted to cutting the hardest

substances, and are enabled to fabricate that most important class of

implements, edge-tools, all of which, from the ponderous pit saw to

the finest lancet, are formed in part with this metal.

It was not, however, until very late in modern times, that we may be

said to have acquired absolute dominion over this individual of the

mineral kingdom, so as to be able at command, to press it into

service, whatever may be its locality, in relation to the surface of

the earth or its interior. For, before the improvements made in the

steam-engine by the discoveries of Watts, we were limited in the power

of availing ourselves of the known existence of iron, however abundant

in any particular spot, by the necessity of the concurrence of a

stream of water in the same location with that of the metal, as a

means of impelling the machinery for producing the blast requisite in

the operation of smelting. Since those improvements, steam power may

be employed wherever the ore and fuel is found in sufficient

quantities to authorize the erection of furnaces; and the manufacture

of iron has in consequence, especially in Great Britain, risen into

great importance. The annual produce of smelted ore in that kingdom,

is estimated now to be about seven hundred thousand tons.

We cannot avoid suggesting here, to the owners and workers of coal

property in Virginia, the propriety of investigating the strata

through which they necessarily pass in their mining operations, with

reference to the discovery of argillaceous iron-stone, with more

minuteness than hitherto they have done--if indeed, (which we are

inclined to doubt,) their attention has been in any degree directed to

such examination. It is from this species of iron-stone, accompanying

coal-strata, that Great Britain derives at least nineteen twentieths

of the metals which she possesses in such abundance, and to which, in

connection with its convenient location in the immediate vicinity of

the fuel necessary in its reduction, she owes her towering eminence as

a manufacturing country. The coal formation of Virginia contains the

same clays, shales, sandstones and slates, and these are characterized

by the same vegetable impressions that mark the series in other

countries. And may we not reasonably ask, why should we hastily

conclude this usual concomitant of the coal strata in England,

Scotland, France and Germany, to be wanting here; or rather, why may

not we hope to find it equally abundant in our own coal district. We

are induced to urge this suggestion the more, from the circumstance,

that this species of ore presents in its external characters, so

little indicative of its metallic nature or chemical composition, that

but for its greater weight, it might well escape the notice of an

inexperienced or unobservant eye, unless arrested by some such hope as

we have been induced to hold out. Even in England, where from its

great abundance it might have been expected to be generally better

known, instances have occurred in some districts, of its being

wastefully misapplied, through ignorance, to the common purpose of

mending the roads. The immense benefits that would result from success

attending a research directed to this object, as well to the city of

Richmond, as to a few fortunate individuals, are too obvious to

require comment. It is sufficient to remark, that it would prove an

abundant source of individual wealth, and would, in connection with

her other great advantages and increasing facilities of

transportation, be the means of elevating the metropolis of Virginia

to an exalted rank in the class of large cities, and enable her to vie

in importance with the proudest seat of manufactures, or the most

extensive emporium of commerce.

It was our intention, as our title announces, to have passed rapidly

on, and glanced at the history, uses, and national importance of coal,

and some of the most valuable of the other mineral substances, as well

as to have pointed out in a short series of remarks, some of the

advantages to be derived from the cultivation and pursuit of

mineralogical and geological inquiries in connection with this

subject; but we have loitered on the way, and the contracting limits

of our paper admonish us to hasten to a close. We may at another time,

if leisure permit, and if on reflection, we deem our endeavors at all

likely to attract attention to subjects which have too long been

almost universally neglected, again resume, after our own fashion, a

subject which under better management, could not fail to prove

interesting as well as instructive.

The southern literary messenger, Vol. I., No. 9, May, 1835 · 第 30 / 74 题