Iron

“ Prescott. “We could sit here till to-morrow morning trying to mention things made of iron, or by means of iron, and then we should be likely to forget many of them.
“If it weren’t for iron and steel implements and tools, men would have hard work to earn a living.
“Dr. Crandon, what does it seem to you that we should lose if we were to lose iron?”
“I’ve been thinking about the arts—surgery, too. We need iron for sculpture, for music, for printing books and papers. We need iron, I should say, for art’s sake.” ”

“ I endeavoured, by some very remarkable instances, to prove, that iron, wherever it comes into combination with any substances that are tending to consolidation, hastens the process exceedingly;—and also renders the hardness of the body much greater. ”

“ If primitive man were slow to learn the use of iron it was not because this metal was scarce, for iron is everywhere. "Wherever, as we go up and down, we see a red-colored surface, or a reddish tint upon the solid substances of the earth, we see iron—the bank of red clay, the red brick, the red paint upon the house wall, the complexion of rosy youth, or my lady's ribbon. Even the rosy apple derives its tint from iron which it contains."8 But although iron is so abundant it is seldom found in its pure or natural state. ”

“ Iron is a metal which is used both as a food and as a medicine and has also a definite local action. Externally, it is not absorbed by the unbroken skin, but when applied to the broken skin, sores, ulcers and mucous surfaces, the ferric salts are powerful astringents, because they coagulate the albuminous fluids in the tissues themselves. The salts of iron quickly cause coagulation of the blood, and the clot plugs the bleeding vessels. ”

“ As time went on and man advanced in civilization, iron was found to be the most useful of metals. Iron can be shaped into many forms. It can be drawn into wire of any desired length or fineness, it may be bent in any direction, it may be sharpened, or hardened, or softened, at pleasure. "Iron accommodates itself to all our wants and desires and even to our caprices. ”

“ The Office of Iron in the Blood.—Iron exists in the blood in the red corpuscles, and gives them color and the power of absorbing gases. The fact that peroxide of iron is one of the readiest absorbents of gases, and parts with them as readily on exposure in thin layers to the air, so that it can be used over and over again for that work, gives a clew to its special function in the red corpuscles of the blood. It enables them readily to absorb oxygen as they pass along the minute blood-vessels of the lungs, and to carry it to all parts of the body, where they part with it as it is demanded. ”

“ Iron is essential to the human body. It is taken into the body in the form of food, and is excreted from the body in the bile and feces. It has been estimated that typical food contains 10 mgm. of iron daily. The hemoglobin of the blood contains 0.04 per cent. ”

“ CHAPTER XI. IRON—NICKEL—COBALT—ZINC—CADMIUM. IRON.
Iron rusts or oxidises very readily, and, consequently, is rarely found in the metallic state in nature; such native iron as is found being generally of meteoric origin or imbedded in basalt and other igneous rocks. It chiefly occurs as oxide, as in magnetite, hæmatite, and in the brown iron ores and ochres. Chalybite, which is carbonate of iron, is an ore of great importance. Iron is found combined with sulphur in pyrrhotine and pyrites, and together with arsenic in mispickel. ”

“ Instantaneously there is simply a distribution of electricity and Maxwell’s equations to express our expectations. But iron is not an expectation or even a recollection. It is a fact; and this fact, which is iron, is what happens during a period of time. Iron and a biological organism are on a level in requiring time for functioning. There is no such thing as iron at an instant; to be iron is a character of an event. Every physical constant respecting iron which appears in scientific tables is the register of such a character. ”

“ The existence of the iron depends on the presence within it of a substantial form, which is the cause of its properties, e.g. brightness, hardness, weight. But, by degrees, the iron becomes converted into a mass of rust, which is dull, and soft, and light, and, in all other respects, is quite different from the iron. ”

“ These huge solid masses of iron, discharged from the clouds in a burning state, may well set the brains of philosophic men to work, to unravel the splendid mystery that contrives laboratories high up in the air, from which dense tons of pure iron are discharged upon our earth. ”

“ The use of iron is identified with the time of erecting the Egyptian monuments, the oldest in the world, and a very large number of the helmets dug up at Nineveh were made of iron, and some of copper inlaid. Readers of history have only to turn to the pages of Anderson, Fosbroke, Scrivenor, Layard, and others to learn that iron has ever been a most useful and valuable article of commerce. ”

“ Water saturated with fixed air dissolves iron, and makes a pleasant chalybeat.
The calx of iron gives a green colour to glass.
[Pg 107] Iron readily combines with sulphur. When they are found combined by nature, the substance is called pyrites.
The union of phosphoric acid with iron makes it brittle when cold, commonly called cold short; and the union of arsenic makes it brittle when hot, thence called red short.
Iron unites with gold, silver, and platina, and plunged in a white heat into mercury, it becomes coated with it ”

“ Iron forms two classes of salts, namely, ferrous or proto salts, in which iron exhibits a power of combining with two atoms of any monad element, and the ferric or persalts in which iron has a capacity of uniting with three atoms of any monad element. ”

“ The faultiness of this sentence becomes apparent when we remember that iron itself is a metal and is included in the word metals, which forms one side of the comparison. In short, “Iron is more useful than iron together with all the other metals.” ”

“ Take filings of Iron, in what quantity you please; put them into a broad unglazed earthen vessel; set it under the muffle of a cupelling furnace; make it red-hot; stir [Pg 277] the filings frequently; and keep up the same degree of fire till the Iron be wholly turned into a red powder.
OBSERVATIONS.
Iron easily loses its phlogiston by the action of fire. The calx that remains after its calcination is exceeding red; which makes this be thought the natural colour of the earth of that metal. ”

“ We say that the iron made by the ancients was in reality a variety of what we now term wrought iron, for it fulfilled three of the principal requirements for wrought iron, viz., it was not necessarily melted during production, it was a malleable metal, and it contained cinder or slag, but practically no carbon. ”

“ It is so, and that is one of its worst properties. Every liquor, and even a moist air corrode it. But the rust of iron is not pernicious: on the contrary, it is a very useful medicine.
Geo. I have heard of steel drops and steel filings given for medicine.
Tut. Yes; iron is given in a variety of forms, and the property of them all is to strengthen the constitution. Many springs are made medicinal by the iron that they dissolve in the bowels of the earth. These are called chalybeate waters, and they may be known by their inky taste, and the rust-coloured sediment they leave in their course. ”

“ The association of iron with Mars probably influenced the early chemical physicians in their adoption of iron salts in anæmic complaints, and as general tonics. The undoubted effect of iron remedies in chlorotic disease was naturally observed, and the reputation of the metal was established for the treatment of this condition long before it was discovered that iron is an invariable constituent of the human body. ”

“ Iron.—This substance is probably the most abundant and widely diffused of the metals. It is found in {57}most of the vegetables, and is a very important component of animal tissues. It enters into the composition of human blood in about one part per thousand. Ordinarily, the food conveys to the system enough iron for its use, but it must sometimes be introduced separately as a remedy, especially after great loss of blood, or after some wasting disease. Under its influence the blood seems to be rapidly restored, and a natural color of the lips and skin replaces the pallor caused by disease. ”

“ But if so be there is but little Iron mixt with your Gold the Regulus of Lead will not separate or precipitate in the melting, and therefore as it melts some filings of Iron are to be added, and to be accurately stirred with a red hot Iron, that so a Regulus of Lead may fall to the bottom, bigger or lesser according to the muchness or littleness of the Iron you added. ”

“ This is just the way with the iron in our world. Wherever you see a bank of red sand or red clay or a little brook which leaves a red mark on the ground as it flows, there is iron. Iron is in most soils, in red bricks, in garnets, in ripening apples, and even in your own blood. It forms one twentieth part of the [Pg 58] crust of the earth. Iron dissolves in water if you give it time enough. If you leave a steel tool out of doors on a wet night, it will rust; that is, some of the iron will unite with the oxygen of the water. ”

“ The production of iron was the event of events in human experience, without a parallel, and without an equal, beside which all other inventions and discoveries were inconsiderable, or at least subordinate. ”

“ Iron is certainly absorbed from the intestinal canal. As the iron in the food supplies all the iron in the body of a healthy person, there is no doubt that it is absorbed in the organic form. Whether inorganic salts are directly absorbed has been a matter of much discussion ”

“ If, then, extra iron is required for ship-building, the first effect is to withdraw part of the iron habitually consumed for other purposes, and to raise the price of iron. Presently, the iron-makers feel this change and their stocks dwindle. ”

“ When iron contains more than 2.2 per cent. of carbon it is hard, brittle, and more easily melted, and is known as crude iron, or raw iron, because it is derived from the raw product,—black ore. The melted crude iron is called cast iron. Iron is ductile when it contains less than 2.2 per cent. ”

“ You would say that where there is so much iron cinders there must be iron; that the iron has been taken out and dressed; that there must have been lots of iron here, and you begin to look for the iron. ”

“ If, however, I were to enumerate modern iron workings, and those of this age and over Europe only, I should have to write a large and bulky volume, and sheets of paper would run short quicker than the iron, and yet for one sheet they could furnish a thousand worksteads. For amongst minerals, no material is so ample; all metals, and all stones distinct from iron, are outdone by ferric and ferruginous matter. ”

“ Sixthly, That any Iron may, in a very little time, be case hardned, as the Tradesmen call it, by casing the iron to be hardned with clay, and putting between the clay and iron a good quantity of a mixture of Urine, Soot, Sea-salt, and Horses hoofs (all which contein great quantities of Saline bodies) and then putting the case into a good strong fire, and keeping it in a considerable degree of heat for a good while, and afterwards heating, and quenching or cooling it suddenly in cold water. ”

“ Iron is used in two different states, as cast iron and wrought iron, the differences between them depending on the proportion of carbon combined with the metal, cast iron containing the most and wrought iron the least. ”

“ It was only when iron had become thus plentiful that it could be productive of any effective change on the characteristics of the races by whom it was used. But though iron is the most abundant of all the metals, and was the latest to be introduced into use, it is at the same time the most perishable, rapidly oxidizing, unless preserved by the most favourable circumstances. ”

“ Primitive furnace for smelting iron ore.
Not many of us have ever seen iron, the pure metal, soft, ductile and white like silver. As soon as it is exposed to the air it veils itself with a thin film of rust and becomes black and then red. For that reason there is practically no iron in the world except what man has made. It is rarer than gold, than diamonds; we find in the earth no nuggets or crystals of it the size of the fist as we find of these. But occasionally there fall down upon us out of the clear sky great chunks of it weighing tons. These meteorites are the mavericks of the universe. ”

“ Iron is not a foreign substance to the organism. It is constantly present in the blood, gastric juice, lymph, bile, pigment of the eye and traces of it in the milk and [94] urine. In man there is 1 part of iron to 230 red blood corpuscles, and in cattle 1 to 194 red globules. That it performs a very important part is shown in the rapid construction of red globules when iron is administered in anaemia. ”

“ For the iron is not taken possession of and allured by material effluvia, after the manner of electricks, but only by the immaterial action of its form or an incorporeal progression, which in a piece of iron as its subject acts and is conceived, as it were, in a continuous homogeneous body, and does not need more open ways. ”

“ Thus the molecule of the red matter of the blood contains, for each atom of iron, 712 atoms of carbon, 1,130 of hydrogen, 214 of nitrogen, 245 of oxygen, and 2 of sulphur, or 2,303 atoms in all. Existing in compounds of so complex composition, iron can be present only in very small proportions to the whole. Though an essential element, there is comparatively but little of it. The whole body of man does not contain more than one part in twenty thousand of it. ”