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industrial biography-第7章

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 。。。'

Deprived of their armourers; the Jews were rendered comparatively

powerless。



It was the knowledge of the art of iron…forging which laid the

foundation of the once great empire of the Turks。  Gibbon relates that

these people were originally the despised slaves of the powerful Khan

of the Geougen。  They occupied certain districts of the mountain…ridge

in the centre of Asia; called Imaus; Caf; and Altai; which yielded

iron in large quantities。  This metal the Turks were employed by the

Khan to forge for his use in war。  A bold leader arose among them; who

persuaded the ironworkers that the arms which they forged for their

masters might in their own hands become the instruments of freedom。

Sallying forth from their mountains; they set up their standard; and

their weapons soon freed them。  For centuries after; the Turkish

nation continued to celebrate the event of their liberation by an

annual ceremony; in which a piece of iron was heated in the fire; and

a smith's hammer was successively handled by the prince and his

nobles。



We can only conjecture how the art of smelting iron was discovered。

Who first applied fire to the ore; and made it plastic; who

discovered fire itself; and its uses in metallurgy? No one can tell。

Tradition says that the metal was discovered through the accidental

burning of a wood in Greece。  Mr。 Mushet thinks it more probable that

the discovery was made on the conversion of wood into charcoal for

culinary or chamber purposes。  〃If a mass of ore;〃 he says;

〃accidentally dropped into the middle of the burning pile during a

period of neglect; or during the existence of a thorough draught; a

mixed mass; partly earthy and partly metallic; would be obtained;

possessing ductility and extension under pressure。  But if the

conjecture is pushed still further; and we suppose that the ore was

not an oxide; but rich in iron; magnetic or spicular; the result

would in all probability be a mass of perfectly malleable iron。  I

have seen this fact illustrated in the roasting of a species of

iron…stone; which was united with a considerable mass of bituminous

matter。  After a high temperature had been excited in the interior of

the pile; plates of malleable iron of a tough and flexible nature

were formed; and under circumstances where there was no fuel but that

furnished by the ore itself。〃*

 'footnote。。。

Papers on Iron and Steel; 363…4。

 。。。'



The metal once discovered; many attempts would be made to give to

that which had been the effect of accident a more unerring result。

The smelting of ore in an open heap of wood or charcoal being found

tedious and wasteful; as well as uncertain; would naturally lead to

the invention of a furnace; with the object of keeping the ore

surrounded as much as possible with fuel while the process of

conversion into iron was going forward。  The low conical furnaces

employed at this day by some of the tribes of Central and Southern

Africa; are perhaps very much the same in character as those adopted

by the early tribes of all countries where iron was first made。  Small

openings at the lower end of the cone to admit the air; and a larger

orifice at the top; would;  with charcoal; be sufficient to produce

the requisite degree of heat for the reduction of the ore。  To this

the foot…blast was added; as still used in Ceylon and in India; and

afterwards the water…blast; as employed in Spain (where it is known

as the Catalan forge); along the coasts of the Mediterranean; and in

some parts of America。



It is worthy of remark; that the ruder the method employed for the

reduction of the ore; the better the quality of the iron usually is。

Where the art is little advanced; only the most tractable ores are

selected; and as charcoal is the only fuel used; the quality of the

metal is almost invariably excellent。  The ore being long exposed to

the charcoal fire; and the quantity made small; the result is a metal

having many of the qualities of steel; capable of being used for

weapons or tools after a comparatively small amount of forging。

Dr。 Livingstone speaks of the excellent quality of the iron made by

the African tribes on the Zambesi; who refuse to use ordinary English

iron; which they consider 〃rotten。〃*

 'footnote。。。

Dr。 Livingstone brought with him to England a piece of the Zambesi

iron; which he sent to a skilled Birmingham blacksmith to test。

The result was; that he pronounced the metal as strongly resembling

Swedish or Russian; both of which kinds are smelted with charcoal。

The African iron was found 〃highly carbonized;〃 and 〃when chilled it

possessed the properties of steel。〃

 。。。'

Du Chaillu also says of the Fans; that; in making their best knives

and arrow…heads; they will not use European or American iron; greatly

preferring their own。  The celebrated wootz or steel of India; made in

little cakes of only about two pounds weight; possesses qualities

which no European steel can surpass。  Out of this material the famous

Damascus sword…blades were made; and its use for so long a period is

perhaps one of the most striking proofs of the ancient civilization

of India。



The early history of iron in Britain is necessarily very obscure。

When the Romans invaded the country; the metal seems to have been

already known to the tribes along the coast。  The natives had probably

smelted it themselves in their rude bloomeries; or obtained it from

the Phoenicians in small quantities in exchange for skins and food;

or tin。  We must; however; regard the stories told of the ancient

British chariots armed with swords or scythes as altogether

apocryphal。  The existence of iron in sufficient quantity to be used

for such a purpose is incompatible with contemporary facts; and

unsupported by a single vestige remaining to our time。  The country

was then mostly forest; and the roads did not as yet exist upon which

chariots could be used; whilst iron was too scarce to be mounted as

scythes upon chariots; when the warriors themselves wanted it for

swords。  The orator Cicero; in a letter to Trebatius; then serving

with the army in Britain; sarcastically advised him to capture and

convey one of these vehicles to Italy for exhibition; but we do not

hear that any specimen of the British war…chariot was ever seen in

Rome。



It is only in the tumuli along the coast; or in those of the

Romano…British period; that iron implements are ever found; whilst in

the ancient burying places of the interior of the country they are

altogether wanting。  Herodian says of the British pursued by Severus

through the fens and marshes of the east coast; that they wore iron

hoops round their middles and their necks; esteeming them as

ornaments and tokens of riches; in like manner as other barbarous

people then esteemed ornaments of silver and gold。  Their only money;

according to Caesar; consisted of pieces of brass or iron; reduced to

a certain standard weight。*

 'footnote。。。

HOLINSHED; i。 517。  Iro
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