In very recent times the processes of civilization have had a strong and almost unnoted tendency toward the increased use of the best. Thus, most that iron once was, in use and practice, steel now is. This use, growing daily, widens the scope that must be taken in discussing the features of an Age of Steel. One name has largely supplanted the other. In effect iron has become steel. Had this chapter been written twenty, or perhaps ten, years earlier, it should have been more appropriately entitled the Age of Iron. A separation of the two great metals in general description would be merely technical, and I shall treat the subject very much as though, in accordance with the practical facts of the case, the two metals constituted one general subject, one of them gradually supplanting the other in most of the fields of industry where iron only was formerly used.

The greatest progresses of the race are almost always unappreciated at the time, and are certainly undervalued, except by contrast and comparison. We must continually turn backward to see how far we have gone. An individual who is born into a certain condition thinks it as hard as any other until by experience and comparison he discovers what his times might have been. As for us, in the year 1894, we are not compelled to look backward very far to observe a striking contrast.

IN OLD TIMES. PRYING OUT A 'BLOOM'

All the wealth of today is built upon the forests and prairies and swamps of yesterday, and we must take a wider and more comprehensive glance backward if we should wish to institute those comparisons which make contrasts startling.

We are accustomed to read and to hear of the "Age" of this or that. There was a "Stone" Age, beginning with the tribes to whom it came before the beginnings of their history, or even of tradition, and if we look far backward we may contrast our own time with the times of men who knew no metals. They were men. They lived and hoped and died as we do, even in what is now our own country. Often they were not even barbarians. They builded houses and forts, and dug drains and built aqueducts, and tilled the soil. They knew the value of those things we most value now, home and country; and they organized armies, and fought battles, and died for an idea, as we do. Yet all the time, a time ages long, the utmost help they had found for the bare and unaided hand was the serrated edge of a splintered flint, or the chance-found fragment beside a stream that nature, in a thousand or a million years of polishing, had shaped into the rude semblance of a hammer or a pestle. All men have in their time burned and scraped and fashioned all they needed with an astonishing faculty of making it answer their needs. They once almost occupied the world. Such were those who, so far as we know, were once the exclusive owners of this continent. They were an agricultural, industrious and home-loving people. [5]

5. The Mound Builders and Cave Dwellers. They knew only lead and copper.

Then came, with a strange leaving out of the plentiful and easily worked metals which are the subject of this chapter, the great Age of Bronze. This next stage of progress after stone was marked by a skillful alloy, requiring even now some scientific knowledge in its compounding of copper and tin. A thousand theories have been brought forward to account for this hiatus in the natural stages of human progress, the truth probably being that both tin and copper are more fusible than iron-ores, and that both are found as natural metals. Some accident such as accounts for the first glass, [6] some camp-fire unintended fusion, produced the alloy that became the metal of all the arms and arts, and so remained for uncounted centuries. In this connection it is declared that the Age of Bronze knew something that we cannot discover; the art of tempering the alloy so that it would bear an edge like fine steel. If this be true and we could do it, we should by choice supplant the subject of this chapter for a thousand uses. As the matter stands, and in our ignorance of a supposed ancient secret, the tempering of bronze has an effect precisely opposite to that which the process has upon steel.

6. The story is told by Pliny. Some sailors, landing on the eastern coast of Spain, supported their cooking utensils on the sand with stones, and built a fire under them. When they had finished their meal, glass was found to have been made from the niter and sea-sand by the heat of their fire. The same thing has been done, by accident, in more recent times, and may have been done before the incident recounted. It is also done by the lightning striking into sand and making those peculiar glass tubes known as Fulmenites, found in museums and not very uncommon.

Nevertheless, the old Age of Bronze had its vicissitudes. Those men knew nothing that we consider knowledge now. It was a time when some of the most splendid temples, palaces and pyramids were constructed, and these now lie ruined yet indestructible in the nooks and corners of a desert world. Perhaps the hard rock was chiselled with tools of tempered copper. The fact is of little importance now since the object of the art is almost unknown, and the scattered capitals and columns of Baalbeck are like monuments without inscriptions; the commemorating memorials of a memory unknown. The Age of Bronze and all other ages that have preceded ours lacked the great essentials that insure perpetuity. The Age of Steel, that came last, that is ours now; a degenerate time by all ancient standards; has for its crowning triumph a single machine which is alone enough to satisfy the union of two names that are to us what Caster and Pollux were to the bronze-armed Roman legions of the heroic time--the modern power printing-press.

It may be well to ask and answer the question that at the first view may seem to the reader almost absurd. What is steel? The answer must, in the majority of instances, be given in accordance with the common conception; which is that it is not iron, yet very like it. The old classification of the metal, even familiarly known, needs now to be supplemented, since it does not describe the modern cast and malleable compounds of iron, carbon and metalloids used for structural purposes, and constituting at least three-fourths of the metal now made under the name of steel. The old term, steel, meant the cast, but malleable, product of iron, containing as much carbon as would cause the metal to harden when heated to redness and quenched in water. It must also be included in the definition that the product must be as free as possible from all admixtures except the requisite amount of carbon. This is "tool" steel. [7]

7. It must not be understood that tool steel was always a cast metal. In manufacturing, iron bars were laid together in a box or retort, together with powdered charcoal, and heated to a certain degree for a certain time. The carbon from the charcoal was absorbed by the iron, and from the blistered appearance of the bars when taken out this product was, and is known as "blister" steel.

And here occurs a strange thing. A skill in chemistry, the successor of alchemy, is the educational product of the highest form of civilization.

ANCIENT SMELTING. A RUDE WALL ENCLOSING ALTERNATE LAYERS OF IRON ORE AND CHARCOAL

Metallurgy is the highest and most difficult branch of chemistry. Steel is the best result of metallurgy. Yet steel is one of the oldest products of the race, and in lands that have been asleep since written history began. Wendell Phillips in a lecture upon "The Lost Arts,"-- celebrated at the date of its delivery, but now obsolete because not touching upon advances made in science since Phillips's day,--states that the first needle ever made in England, in the time of Henry VIII, was made by a Negro, and that when he died the art died with him. They did not know how to prepare the steel or how to make the needle. He adds that some of the earliest travelers in Africa found a tribe in the interior who gave them better razors than the explorers had. Oriental steel has been celebrated for ages as an inimitable product. It is certainly true that by the simple processes of semi-barbarism the finest tool-steel has been manufactured, perhaps from the days of Tubal Cain downward. The keenness of edge, the temper whose secret is now unknown, the marvelous elasticity of the tools of ancient Damascus, are familiar by repute to every reader and have been celebrated for thousands of years. The swords and daggers made in central Asia two thousand years ago were more remarkable than any similar product of the present for elaborate and beautiful finish as well as for a cutting quality and a tenacity of edge unknown to modern days. All the tests and experiments of a modern government arsenal, with all the technical knowledge of modern times, do not produce such tool-steel. It is also alleged that the ancient weapons did not rust as ours do, and that the oldest are bright to this day. The steel tools and arms that are made in the strange country of India do not rust there, while in the same climate ours are eaten away. Besides the secret of tempering bronze, it would seem that among the lost arts [8]--a subject that it is easy to make too much of--there was a chemical ingredient or proportion in steel that we now know nothing of. The old lands of sameness and slumber have kept their secrets.

8. Modern science dates from three discoveries. That of Copernicus, the effect of which was to separate scientific astronomy, the astronomy of natural law and defined cause, from astrology, or the astronomy of assertion and tradition. That of Torricelli and Paschal of the actual and measurable weight of the atmosphere, which was the beginning for us of the science of physics, and that of Lavoisier who suspected, and Priestly who demonstrated, oxygen and destroyed the last vestiges of the theory of alchemy. Stahl was the last of these, and Lavoisier the first of the new school in that which I have stated is the highest development of modern science, chemistry. In all these departments we have no adequate reason to assert that we are not ourselves mere students. Some of the functions of oxygen, and the simplest, were unknown within five years before the date of these chapters.

The definition of the word "steel" has been the subject of a scientific quarrel on account of new processes. The grand distinguishing trait of steel, to which it owes all the qualities that make it valuable for the uses to which no other metal can be put, is homogeneity due to fusion. Wrought iron, while having similar chemical qualities, and often as much carbon, is laminated in structure. Structural qualities are largely increasing in importance, and as the structural compounds came gradually to be produced more and more by the casting processes; as they ceased to be laminated in structure and became homogeneous, they were called by the name of steel. The name has been based upon the structure of the material rather than upon its chemical ingredients as heretofore. There is now a disposition to call all compounds of iron that are crystalline in structure, made homogeneous by casting, by the general name of steel, and to distinguish all those whose structural quality is due to welding by the name of iron. [9] This is an outline of the controversy about the differences which should be expressed by a name, between tool steel and structural steel. In tool steel there is an almost infinite variety as to quality. The best is a high product of practical science, and how to make the best seems now, as hinted above, a lost art. It has, besides, a great variety. These varieties are only produced after thousands of experiments directed to finding out what ingredients and processes make toward the desired result. These processes, were they all known outside the manufactories of certain specialists, would little interest the general reader. All machinists know of certain brands of tool steel which they prefer. Tool steel is made especially for certain purposes; as for razors and surgical instruments, for saws, for files, for springs, for cutting tools generally. In these there may be little actual difference of quality or manufacture. The tempering of steel after it has been forged into shape is a specialty, almost a natural gift. The manufacture of tool steel, is, as stated, one of the most technical of the arts, and one of the most complicated of the applications of long experience and experiment.

9. It should be understood that the shapes of structural and other forms of what we now call steel are given by rolling the ingot after casting, and that the crystalline composition of the metal remains.

Cast steel was first made in 1770 by Huntsman, who for the first time melted the "blistered" steel, which until that time had been the tool steel of commerce, in a crucible. Since that time the process of melting wrought iron has become practical and cheap, and results in crystalline, instead of a laminated structure for all steels. The definition of steel now is that it is a compound of iron which has been cast from a fluid state into a malleable mass.

The ordinary test applied to distinguish wrought iron from steel is to ascertain whether the metal hardens with heating and suddenly cooling in cold water, becoming again softened on reheating and cooling slowly. If it does this it is steel of some quality, good or bad; if not, it is iron.

The first mention of iron-ore in America is by Thomas Harriot, an English writer of the time of Raleigh's first colonies. He wrote a history of the settlement on Roanoke Island, in which he says: "In two places in the countrey specially, one about foure score and the other six score miles from the port or place where wee dwelt, wee founde neere the water side the ground to be rockie, which by the triall of a minerall man, was found to hold iron richly. It is founde in manie places in the countrey else." Harriot speaks further of "the small charge for the labour and feeding of men; the infinite store of wood; the want of wood and the deerness thereof in England." It was before the day of coal and coke, or of any of the processes known now. The iron mines of Roanoke Island were never heard of again.

Iron-ore in the colonies is again heard of in the history of Jamestown, in 1607. A ship sailed from there in 1608 freighted with "iron-ore, sassafras, cedar posts and walnut boards." Seventeen tons of iron were made from this ore, and sold for four pounds per ton. This was the first iron ever made from American ores. The first iron-works ever erected in this country were, of course almost, burned by the Indians, in 1622, and in connection three hundred persons were killed.

EARLY SMELTING IN AMERICA

Fire and blood was the end of the beginning of many American industries. Ore was plentiful, wood was superabundant, methods were crude. They could easily excel the Virginia colonists in making iron in Persia and India at the same date. The orientals had certain processes, descended to them from remote times, discovered and practiced by the first metal-workers that ever lived. The difference in the situation now is that here the situation and methods have so changed that the story is almost incredible. There, they remain as always. The first instance of iron-smelting in America is a text from which might be taken the entire vast sermon of modern industrial civilization.

The orientals lacked the steam-engine. So did we in America. The blast was impossible everywhere except by hand, and contrivances for this purpose are of very great antiquity. The bellows was used in Egypt three thousand years ago. It may be that the very first thought by primitive man was of how to smelt the metals he wanted so much and needed so badly. His efforts to procure a means of making his fire burn under his little dump of ore led him first into the science which has attained a new importance in very recent times, pneumatics. The first American furnaces were blown by the ordinary leather bellows, or by a contrivance they had which was called a "blowing tub," or by a very ancient machine known as a "trompe" in which water running through a wooden pipe was very ingeniously made to furnish air to a furnace. It is when the means are small that ingenuity is actually shown. If the later man is deprived of the use of the latest machinery he will decline to undertake an enterprise where it is required. The same man in the woods, with absolute necessity for his companion, will show an astonishing capacity for persevering invention, and will live, and succeed.

WATER-POWER BLOWING TUB

In the lack of steam they learned, as stated, to use water-power for making the blast. The "blowing-tub" was such a contrivance. It was built of wood, and the air-boxes were square. There were two of these, with square pistons and a walking-beam between them. A third box held the air under a weighted piston and fed it to the furnace. Some of these were still in effective use as late as 1873. They were still used long after steam came. The entire machine might be called, correctly, a very large piston-bellows. A smaller machine with a single barrel may be found now, reduced, in the hands of men who clean the interior of pianos, and tune them.

The first iron works built in the present United States that were commercially successful, were established in Massachusetts, in the town of Saugus, a few miles from Boston. The company had a monopoly of manufacture under grant for ten years. [10] They began in 1643, twenty-three years after the landing, which is one of the evidences of the anxiety of those troublesome people to be independent, and of how well men knew, even in those early times, how much the production of iron at home has to do with that independence. This new industry was, at all times, controlled and regulated by law.

10. Some quaint records exist of the incidents of manufacturing in those times.

In 1728, Samuel Higley and Joseph Dewey, of Connecticut, represented to the Legislature that Higley had, "with great pains and cost, found out and obtained a curious art by which to convert, change, or transmute, common iron into good steel sufficient for any use, and was the first that ever performed such an operation in America." A certificate, signed by Timothy Phelps and John Drake, blacksmiths, states that, in June, 1725, Mr. Higley obtained from the subscribers several pieces of iron, so shaped that they could be known again, and that a few days later "he brought the same pieces which we let him have, and we proved them and found them good steel, which was the first steel that ever was made in this country, that we ever saw or heard of." But this remarkable transmuting process was not heard of again unless it be the process of "case-hardening," re-invented some years ago, and known now to mechanics as a recipe.

The smallness of things may be inferred from the fact that, in 1740, the Connecticut Legislature granted to Messrs. Fitch, Walker & Wyllys "the sole privilege of making steel for the term of fifteen years, upon this condition that they should, in the space of two years, make half a ton of steel." Even this condition was not complied with and the term was extended.

The very first hollow-ware casting made in America is said to be still in existence. It was a little kettle holding less than a quart.

THE FIRST CASTING MADE IN AMERICA

The beginnings of the iron industry in America were none too early. There came a need for them very soon after they had extended into other parts of New England, and into New Jersey, New York, Pennsylvania and Maryland. In 1775, there were a large number of small furnaces and foundries. But coal and iron, the two earth-born servants of national progress which are now always twins, were not then coupled. The first of them was out of consideration. The early iron men looked for water-falls instead, and for the wood of the primeval forest. [11] They became very necessary to the country in 1755--when the "French" war came, and they then began the making of the shot and guns used in that struggle, and became accustomed to the manufacture in time for the Revolution. Looking back for causes conducive to momentous results, we may here find one not usually considered in the histories. But for the advancement of the iron industry in America, great for the time and circumstances, independence could not have been won, and even the feeling and desire of independence would have been indefinitely delayed.

11. It is now easy to learn that a coal-mine may be a more valuable possession than a gold-mine, and that iron is better as an industry than silver. There are mountains of iron in Mexico, but no coal, and silver-mines so rich that silver, smelted with expensive wood fuel, is the staple product of the country. Yet the people are among the poorest in Christendom. There is a ceaseless iron-famine, so that the chiefest form of railway robbery is the stealing of the links and pins from trains. There are almost no metal industries. A barbaric agriculture prevails for the want of material for the making of tools. The actual means of progress are not at hand, notwithstanding the product of silver, which goes by weight as a commodity to purchase most that the country needs.

The industry was slow, painful, and uncertain, only because the mechanic arts were pursued only to an extent possible with the skill and muscular energy of men. There were none of the wonderful automatic mechanisms that we know as machine-tools. There was only the almost unaided human arm with which to subdue the boundless savagery of a continent, and win independence and form a nation besides. The demand for huge masses of the most essential of the factors of civilization has grown since, because the ironclad and the big gun have come, and those inadequate forces and crude methods supplied for a time the demand that was small and imperative. The largest mass made then, and frequently spoken of in colonial records, was a piece called a "sow;" spelled then "sowe." It was a long, triangular mass, cast by being run into a trench made in sand. [12]

12. When, later, little side-trenches were made beside the first, with little channels to carry the metal into them, the smaller castings were naturally called "pigges." Hence our "pig-iron."

MAKING A TRENCH TO CAST A 'SOWE.'

Those were the palmy days of the "trip hammer." Nasmyth was not born until 1808, and no machine inventor had yet come upon the scene. The steam-hammer that bears his name, which means a ponderous and powerful machine in which the hammer is lifted by the direct action of steam in a piston, the lower end of whose rod is the hammer-head, has done more for the development of the iron industry than any other mechanical invention. It was not actually used until 1842, or '43. It finally, with many improvements in detail, grew into a monster, the hammer-head, or "tup," being a mass of many tons. And they of modern times were not content merely to let this great mass fall. They let in steam above the piston, and jammed it down upon the mass of glowing metal, with a shock that jars the earth. The strange thing about this Titanic machine is that it can crack an egg, or flatten out a ton or more of glowing iron. Hundreds of the forgings of later times, such as the wrought iron or steel frames of locomotives, and the shafts of steamers, and the forged modern guns, could not be made by forging without this steam hammer.

THE STEAM HAMMER

Then slowly came the period of all kinds of "machine tools." During the period briefly described above they could not make sheet metal. The rolling mill must have come, not only before the modern steam-boiler, but even before the modern plow could be made. Can the reader imagine a time in the United States when sheet metal could not be rolled, and even tin plates were not known? If so, he can instantly transport himself to the times of the wooden "trencher," and the "pewter" mug and pitcher, to the days when iron rails for tramways were unknown, and when even the "strap-iron," always necessary, was rudely and slowly hammered out on an anvil. [13]

13. About 1720, nails were the most needed of all the articles of a new country. Farmers made them for themselves, at home. The secret of how to roll out a sheet and split it into nail-rods was stolen from the one shop that knew how, at Milton, Mass., to give to another at Mlddleboro. The thief had the Biblical name of Hashay H. Thomas. He stole the secret while the hands of the Milton mill were gone to dinner, and served his country and broke up a small monopoly in so doing.

Shears came with the "rolls;" vast engines of gigantic biting capacity, that cut sheets of iron as a lady's scissors cut paper. This cut the squares of metal used for boiler plates, and the steam-engine having come, was turned to the manufacture of materials for its own construction. Others were able to bite off great bars.

The first mill in which iron was rolled in America, was built in 1817 near Connellsville, in Fayette county, Penn. Until 1844, the rolling mills of this country produced little more than bar-iron, hoops, and plates. All the early attempts at railroads used the "strap" rail; unless cast "fish-bellies" were used; which was flat bar-iron provided with counter sunk holes, in which to drive nails for holding the iron to long stringers of wood laid upon ties. When actual rail-making for railroads began, the rolling mill raised its powers to meet the emergency. The "T" rail, universally now used, was invented by Robert Stevens, president and chief engineer of the Camden and Amboy railroad, and the first of them were laid as track for that road in 1832. From this time until 1850, rolling mills for making "U" and "T" rails rapidly increased in number, but in that year all but two had ceased to be operated because of foreign competition.

SHEARS FOR CUTTING BAR-IRON

During some five years previous to this writing a revolution has taken place in the construction of buildings which has resulted in what is known as the "sky-scraper." This was, in many respects, the most startling innovation of times that are startling in most other respects, and was begun in that metropolis of surprises and successes, the city of Chicago. This innovation was really such in the matter of using steel in the entire framing of a commercial building, but it was not the first use of metal as a building material. The first iron beams used in buildings were made in 1854, in a rolling mill at Trenton, N. J., and were used in the construction of the Cooper Institute, and the building of Harper & Brothers. For these special rolls, of a special invention, were made. These have now become obsolete, and a new arrangement is used for what are known as "structural shapes."

HYDRAULIC SHEARS. THE KNIFE HAS A PRESSURE OF 3,000 TONS, CLIPPING PIECES OF IRON TWO BY FOUR FEET

I have spoken of the use of wood-fuel in the early stages of iron manufacture in this country, followed by the adoption exclusively of coal and its products. Then, many years later, came the departure from this in the use of gas for fuel. The first use of this kind is said to date as far back as the eighth century, and modifications of the idea had been put in practice in this country, in which gas was first made from coal and then used as fuel. Then came "natural gas." This product has been known for many centuries. It was the "eternal" fuel of the Persian fire-worshippers, and has been used as fuel in China for ages. Its earliest use in this country was in 1827, when it was made to light the village of Fredonia, N. Y. Probably its first use for manufacturing purposes was by a man named Tompkins, who used it to heat salt-kettles in the Kenawha valley in 1842. Its next use for manufacturing purposes was made in a rolling mill in Armstrong county, Penn., in 1874, forty-seven years after it had been used at Fredonia, and twenty-nine years after it had been used to boil salt.

Now the use of natural gas as manufacturing fuel is universal, not alone over the spot where the gas is found, but in localities hundreds of miles away. It is one of the strangest developments of modern scientific ingenuity. That enormous battery of boilers, which was one of the most imposing spectacles of the Columbian Exhibition of 1893, whose roar was like that of Niagara, was fed by invisible fuel that came silently in pipes from a state outside of that where the great fair was held. We are left to the conclusion that the making of the coal into gas at the mine, and the shipping of it to the place of consumption through pipes, is more certain of realization than were a hundred of the early problems of American progress that have now been successful for so long that the date of their beginning is almost forgotten.

THE STEEL OF THE PRESENT.--The story of steel has now almost been told, in that general outline which is all that is possible without an extensive detail not interesting to the general reader. In it is included, of necessity, a resumÉ of the progress, from the earliest times in this country, of the great industry which is more indicative than any other of the material growth of a nation. I now come to that time when steel began to take the place that iron had always held in structural work of every class. The differences between this structural steel and that which men have known by the name exclusively from remote ages, I have so far indicated only by reference to the well-known qualities of the latter. It now remains to describe the first.

In 1846 an American named William Kelley was the owner of an iron-works at Eddyville, Ky. It was an early era in American manufactures of all kinds, and the district was isolated, the town not having five hundred inhabitants, and the best mechanical appliances were remote.

In 1847, Kelley began, without suggestion or knowledge of any experiments going on elsewhere, to experiment in the processes now known as the "Bessemer," for the converting of iron into steel. To him occurred, as it now appears first, the idea that in the refining process fuel would be unnecessary after the iron was melted if powerful blasts of air were forced into the fluid metal. This is the basic principle of the Bessemer process. The theory was that the heat generated by the union of the oxygen of the air with the carbon of the metal, would accomplish the refining. Kelley was trying to produce malleable iron in a new, rapid and effective way. It was merely an economy in manufacture he was endeavoring to attain.

To this end he made a furnace into which passed an air-blast pipe, through which a stream of air was forced into the mass of melted metal. He produced refined iron. Following this he made what is now called a "converter," in which he could refine fifteen hundred pounds of metal in five minutes, effecting a great saving in time and fuel, and in his little establishment the old processes were thenceforth dispensed with. It was locally known as "Kelley's air-boiling process." It proved finally to be the most important, in large results, ever conceived in metallurgy. I refer to it hurriedly, and do not attempt to follow the inventor's own description of his constructions and experiments. When he heard that others in England were following the same line of experiment, he applied for a patent. He was decided to be the first inventor of the process, and a patent was granted him over Bessemer, who was a few days before him. There is no question that others were more skillful, and with better opportunities and scientific associations, in carrying out the final details, mechanical and chemical, which have completed the Kelley process for present commercial uses. Neither is there any question that this back-woods iron-making American was the first to refine iron by passing through it, while fluid, a stream of air, which is the process of making that steel which is not tool steel, and yet is steel, the now almost universal material for the making of structures; the material of the Ferris wheel, the wonderful palaces of the Columbian exposition, the sky-scrapers of Chicago, the rails, the tacks, [14] the fence-wire, the sheet-metal, the rails of the steam-railroads and the street-lines, the thousand things that cannot be thought of without a list, and which is a material that is furnished more cheaply than the old iron articles were for the same purposes.

14. In the history of Rhode Island, by Arnold, it is claimed that the first cold cut nails in the world were made by Jeremiah Wilkinson, in 1777. The process was to cut them from an old chest-lock with a pair of shears, and head them in a smith's vise. Then small nails were cut from old Spanish hoops, and headed in a vise by hand. Needles and pins were made by the same person from wire drawn by himself. Supposing this to be the beginning of the cut-nail idea, the machine for making them would still remain the actual and practical invention, since it would mark the beginning of the industry as such. The importance of the latter event may be measured by the fact that about the end of the last century there began a strong demand. In the homely farm-houses, or the little contracted shops of New England villages, the descendants of the Pilgrims toiled providently, through the long winter months, at beating into shape the little nails which play so useful a part in modern industry. A small anvil served to beat the wire or strip of iron into shape and point it; a vise worked by the foot clutched it between jaws furnished with a gauge to regulate the length, leaving a certain portion projecting, which, when beaten flat by a hammer, formed the head. This was industry, but not manufacture, for in 1890 the manufacturers of this country produced over eight hundred million pounds of iron, steel, and wire nails, representing a consumption of this absolutely indispensable manufacture for that year, at the rate of over twelve pounds for each individual inhabitant of the United States.

SECTIONAL VIEW OF A BESSEMER 'CONVERTER.'

The technical detail of steel-making is exceedingly interesting to students of applied science, but it is detail, the key to which is in the process mentioned; the forcing of a stream of air through a molten mass of iron. The "converter" is a huge pitcher-shaped vessel, hung upon trunnions so as to be tilted, and it is usual to admit through these trunnions, by means of a continuing pipe, the stream of air. The converters may contain ten tons or more of liquid metal at one time, which mass is converted from iron into steel at one operation.

Forty-five years ago, or less, works that could turn out fifty tons of iron in a day were very large. Now there are many that make five hundred tons of steel in the same time. Then, nearly all the work was done by hand, and men in large numbers handled the details of all processes. Now it would be impossible for human hands and strength to do the work. The steel-mill is, indeed, the most colossal combination of Steam and Steel. There are tireless arms, moved by steam, insensible alike to monstrous strains and white heat, which seize the vast ingots and carry them to and fro, handling with incredible celerity the masses that were unknown to man before the invention of the Bessemer process. And all these operations are directed and controlled by a man who stands in one place, strangely yet not inappropriately named a "pulpit," by means of the hand-gear that gives them all to him like toys.

No one who has seen a steel-mill in operation, can go away and really write a description of it; no artist or camera has ever made its portrait, yet it is the most impressive scene of the modern, the industrial, world. There is a "fervent heat," surpassing in its impressions all the descriptions of the Bible, and which destroys all doubt of fire with capacity to burn a world and "roll the heavens together as a scroll." There is a clang and clatter accompanying a marvelous order. There are clouds of steam. There are displays of sparks and glow surpassing all the pyrotechnics of art. Monstrous throats gasp for a draught of white-hot metal and take it at a gulp. Glowing masses are trundled to and fro. There are mountains of ore, disappearing in a night, and ever renewed. There is a railway system, and the huge masses are conveyed from place to place by locomotive engines. There is a water system that would supply a town. There may be miles of underground pipes bringing gas for fuel. Amid these scenes flit strong men, naked to the waist, unharmed in the red pandemonium, guiding every process, superintending every result; like other men, yet leading a life so strange that it is apparently impossible. The glowing rivers they escape; corruscating showers of flying white-hot metal do not fall upon them; the leaping, roaring, hungry, annihilating flames do not touch them; the gurgling streams of melted steel are their familiar playthings; yet they are but men.

The "rolling" of these slabs and ingots into rails is a following operation still. The continuous rail is often more than a hundred feet in length, which is cut into three or four rails of thirty feet each, and it goes through every operation that makes it a "T" rail weighing ninety pounds to the yard with the single first heat. There are trains of rolls that will take in a piece of white-hot metal weighing six tons, and send it out in a long sheet three thirty-seconds of an inch thick and nearly ten feet wide. The first steel rails made in this country were made by the Chicago Rolling Mill Company, in May, 1865. Only six rails were then made, and these were laid in the tracks of the Chicago and North Western Railroad. It is said they lasted over ten years. The first nails, or tacks, were made of steel at Bridgewater, Mass., at about the same date.

ROLLING INGOTS

Some thirty years ago there were but two Bessemer converters in the United States, and the manufacture of steel did not reach then five hundred tons per annum. In 1890 the product was more than five million tons.

In 1872 the price of steel was one hundred and eighty-six dollars per gross ton. It can be purchased now at varying prices less than thirty dollars per ton. The consumption of seventy millions of people is so great that it is difficult to imagine how so enormous a mass of almost imperishable material can be absorbed, and the latest figures show a consumption greatly in excess of those mentioned as the sum of manufactures.

We turn again for the comparison without which all figures are valueless to the good year 1643, when the "General court" passed a resolve commending the great progress made in the manufacture of iron which they had licensed two years before, and granted the company still further privileges and immunities upon condition that it should furnish the people "with barre iron of all sorts for their use at not exceedynge twenty pounds per ton." We recall the first little piece of hollow ware made in America. We remember how old the old world is said to be and how long the tribes of men have plodded upon it, and then the picture appears of the progress that has grown almost under our eyes. The real Age of Steel began in 1865. It is not yet thirty years old. By comparison we are impressed with the fact that the real history of the metal is compressed into less than half an ordinary lifetime.