We may suppose that a knowledge of iron would spread rapidly. The knowledge of metallurgy necessary for the production of bronze was at this time widely disseminated. It would require, therefore, but a hint to start them in experiments. In the dissemination of this knowledge, commerce, of course, played a most important part. Whenever the early Greek and Roman writers have occasion to mention the arms of the less civilized tribes of Europe, we learn they were of iron. This shows that at a very early time this knowledge had spread all over Europe.7
It is scarcely necessary to remark that the use of iron would not drive out the use of bronze. That would still be used for many purposes; and even stone would continue in use, at least for some purposes. At the battle of Marathon, arrow-heads and lances of stone were largely used. We can easily understand how, by one of a number of causes, some rude tribes, yet unacquainted with the use of metal, would come to occupy the site of some settlement, the inhabitants of which had been in the Bronze or Iron Age. This actually happened at ancient Troy, where the remains of a stone-using folk have been found above those of a people using metal. This, though an exception to the general rule, need give us no surprise.
Iron manufacture at the present day, is one of our great industries. In its present form it is the final development of an industry whose first unfoldings we have now to glance at. That the first process man employed to procure iron should have been very rude, is what we would expect. Some of the partially civilized tribes of to-day may give us an insight into the process employed. We are told that in Tartary each native makes the iron he needs, just as every household would make its own bread. The furnace is a very small affair, not holding more than three pounds of ore. This is filled with ore and charcoal. The bellows are used, and after the charcoal is all burned out, the result is a small piece of spongy iron, which needs only repeated heating and hammering to be made serviceable.8 Primitive furnaces, on a somewhat larger scale, have been discovered in Switzerland. Here the excavation was made in the side of a hill, and a rude, dome-shaped chimney built over it.
We must not forget that our task ends where the historian’s begins. The use of iron did not long precede history, so we have but little to describe as to the customs and manners of life during the prehistoric Iron Age. A general advance in all the social arts must surely have taken place. Improved tools, and more cheaply produced, could not fail to advance man very materially in culture. Some lake settlements were still in use as places of residence, but better means of protection than water was now known—walled cities were in use, especially around the Mediterranean sea.
Mr. Morgan has traced for us the evolution of government. At this early date the Greek and Roman people were engaged in substituting for ancient society the modern idea of government founded on territory.9 The great body of European tribes were now in the final stage of barbaric life. Their system of government was doubtless the highest known to ancient society— that of confederacies; the union of tribes speaking dialects of the same language, for offensive and defensive purposes.
As characteristic of the advance of this epoch, we may mention the appearance of pottery made on the potter’s wheel, and baked in an improved kind of furnace. Previous to this epoch all the pottery had been moulded by hand and baked in an imperfect manner in the open air. This may be thought to be but a small improvement. Our civilization, however, depends upon small improvements. Only during the early part of this age, while iron was scarce, and therefore valuable, would it be used for the purpose of ornaments. Iron brooches have been found in considerable quantities in the lake settlements. Bronze would still be the principal article used for ornaments. The articles of bronze manufactured play a great deal of skill. Nor was gold entirely forgotten. The cap-shaped ornament of gold was found in Ireland. During the Bronze age, as we have seen, there was no attempt made to represent animal forms by way of ornaments; but we meet with such representations during the early part of the Iron Age. This shows how they ornamented the sheath of a sword found in one of the Swiss lakes.