Note 105 — Chapter III · THE WEAPONS OF THE AGE OF WOOD: THE BOOMERANG AND THE SWORD OF WOOD; OF STONE, AND OF WOOD AND STONE COMBINED.

It is instructive to note the novel application of old inventions to general use when the necessities of the age demand them. The detonating and explosive force of gunpowder was known, in the form of squibs and fireworks, centuries before firearms were required. The power of steam, as a whirling toy and a copper vessel prove, was familiar to the old Egyptians, and perhaps to the Greeks and Romans under the name of æolipylæ αἰόλου πύλαι. But only at the end of the last century its motive force attracted general attention; it became a necessary of civilised life, and at once superseded the sailer and the stage coach. And by aid of the Past we may project the Future. Man will bungle over the balloon, but he will never fly straight till railways and steamers become too slow for him: when ‘levitation,’ in fact, shall become a necessity. Now the mode of transit would be an unmitigated evil to humanity.