A HISTORY OF SCIENCE

We may pass over such rudimentary advances in the direction of civilization as are implied in the use of articulate language,

the application of fire to the uses of man, and the systematic making of dwellings of one sort or another, since all of these are stages of progress that were reached very early in the prehistoric period. What more directly concerns us is to note that a really high stage of mechanical development had been reached before the dawnings of Egyptian history proper. All manner of household utensils were employed; the potter’s wheel aided in the construction of a great variety of earthen vessels; weaving had become a fine art, and weapons of bronze, including axes, spears, knives, and arrow-heads, were in constant use.

Animals had long been domesticated, in particular the dog, the cat, and the ox; the horse was introduced later from the East.

The practical arts of agriculture were practised almost as they are at the present day in Egypt, there being, of course, the same dependence then as now upon the inundations of the Nile.

As to government, the Egyptian of the first dynasty regarded his king as a demi-god to be actually deified after his death, and this point of view was not changed throughout the stages of later Egyptian history. In point of art, marvellous advances upon the skill of the prehistoric man had been made, probably in part under Asiatic influences, and that unique style of stilted yet expressive drawing had come into vogue, which was to be remembered in after times as typically Egyptian. More important than all else, our Egyptian of the earliest historical period was in possession of the art of writing. He had begun to make those specific records which were impossible to the man of the Stone Age, and thus he had entered fully upon the way of historical progress which, as already pointed out, has its very foundation in written records. From now on the deeds of individual kings could find specific record. It began to be possible to fix the chronology of remote events with some accuracy; and with this same fixing of chronologies came the advent of true history. The period which precedes what is usually spoken of as the first dynasty in Egypt is one into which the present-day searcher is still able to see but darkly. The evidence seems to suggest than an invasion of relatively cultured people from the East overthrew, and in time supplanted, the Neolithic civilization of the Nile Valley. It is impossible to date this invasion accurately, but it cannot well have been later than the year 5000

B.C., and it may have been a great many centuries earlier than this. Be the exact dates what they may, we find the Egyptian of the fifth millennium B.C. in full possession of a highly organized civilization.

All subsequent ages have marvelled at the pyramids, some of which date from about the year 4000 B.C., though we may note in passing that these dates must not be taken too literally. The chronology of ancient Egypt cannot as yet be fixed with exact accuracy, but the disagreements between the various students of the subject need give us little concern. For our present purpose it does not in the least matter whether the pyramids were built three thousand or four thousand years before the beginning of our era.

It suffices that they date back to a period long antecedent to the beginnings of civilization in Western Europe. They prove that the Egyptian of that early day had attained a knowledge of practical mechanics which, even from the twentieth-century point

of view, is not to be spoken of lightly. It has sometimes been suggested that these mighty pyramids, built as they are of great blocks of stone, speak for an almost miraculous knowledge on the part of their builders; but a saner view of the conditions gives no warrant for this thought. Diodoras, the Sicilian, in his famous World’s History, written about the beginning of our era, explains the building of the pyramids by suggesting that great quantities of earth were piled against the side of the rising structure to form an inclined plane up which the blocks of stone were dragged. He gives us certain figures, based, doubtless, on reports made to him by Egyptian priests, who in turn drew upon the traditions of their country, perhaps even upon written records no longer preserved. He says that one hundred and twenty thousand men were employed in the construction of the largest pyramid, and that, notwithstanding the size of this host of workers, the task occupied twenty years. We must not place too much dependence upon such figures as these, for the ancient historians are notoriously given to exaggeration in recording numbers; yet we need not doubt that the report given by Diodorus is substantially accurate in its main outlines as to the method through which the pyramids were constructed. A host of men putting their added weight and strength to the task, with the aid of ropes, pulleys, rollers, and levers, and utilizing the principle of the inclined plane, could undoubtedly move and elevate and place in position the largest blocks that enter into the pyramids or–what seems even more wonderful–the most gigantic obelisks, without the aid of any other kind of mechanism or of any more occult power. The same hands could, as Diodorus suggests, remove all trace of the debris of construction and leave the pyramids and obelisks standing in weird isolation, as if sprung into being through a miracle.

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