The Shrinkage of the Planet

What a tremendous affair it was, the world of Homer, with its indeterminate boundaries, vast regions, and immeasurable distances. The Mediterranean and the Euxine were illimitable stretches of ocean waste over which years could be spent in endless wandering. On their mysterious shores were the improbable homes of impossible peoples. The Great Sea, the Broad Sea, the Boundless Sea; the Ethiopians, "dwelling far away, the most distant of men," and the Cimmerians, "covered with darkness and cloud," where "baleful night is spread over timid mortals." Phoenicia was a sore journey, Egypt simply unattainable, while the Pillars of Hercules marked the extreme edge of the universe. Ulysses was nine days in sailing from Ismarus the city of the Ciconians, to the country of the Lotus-eaters--a period of time which to-day would breed anxiety in the hearts of the underwriters should it be occupied by the slowest tramp steamer in traversing the Mediterranean and Black Seas from Gibraltar to Sebastopol.

Homer's world, restricted to less than a drummer's circuit, was nevertheless immense, surrounded by a thin veneer of universe--the Stream of Ocean. But how it has shrunk! To-day, precisely charted, weighed, and measured, a thousand times larger than the world of Homer, it is become a tiny speck, gyrating to immutable law through a universe the bounds of which have been pushed incalculably back. The light of Algol shines upon it--a light which travels at one hundred and ninety thousand miles per second, yet requires forty-seven years to reach its destination. And the denizens of this puny ball have come to know that Algol possesses an invisible companion, three and a quarter millions of miles away, and that the twain move in their respective orbits at rates of fifty-five and twenty-six miles per second. They also know that beyond it are great chasms of space, innumerable worlds, and vast star systems.

While much of the shrinkage to which the planet has been subjected is due to the increased knowledge of mathematics and physics, an equal, if not greater, portion may be ascribed to the perfection of the means of locomotion and communication. The enlargement of stellar space, demonstrating with stunning force the insignificance of the earth, has been negative in its effect; but the quickening of travel and intercourse, by making the earth's parts accessible and knitting them together, has been positive.

The advantage of the animal over the vegetable kingdom is obvious. The cabbage, should its environment tend to become worse, must live it out, or die; the rabbit may move on in quest of a better. But, after all, the swift-footed creatures are circumscribed in their wanderings. The first large river almost inevitably bars their way, and certainly the first salt sea becomes an impassable obstacle. Better locomotion may be classed as one of the prime aims of the old natural selection; for in that primordial