The sea in universal history.
Universal history loses half its import, remains an aggregate of parts, fails to yield its significance as a whole, if it does not continually take into account the unifying factor of the seas. Indeed, no history is entitled to the name of universal unless it includes a record of human movements and activities on the ocean, side by side with those on the land. Our school text-books in geography present a deplorable hiatus, because they fail to make a definite study of the oceans over which man explores and colonizes and trades, as well as the land on which he plants and builds and sleeps.
The striking fact about the great World Ocean to-day is the manifold relations which it has established between the dwellers on its various coasts. Marine cables, steamer and sailing routes combine to form a network of paths across the vast commons of the deep. Over these the commercial, political, intellectual, or even purely migrant activities of human life move from continent to continent. The distinctive value of the sea is that it promotes many-sided relations as opposed to the one-sided relation of the land. France on her eastern frontier comes into contact with people of kindred stock, living under similar conditions of climate and soil to her own; on her maritime border she is open to intermittent intercourse with all continents and climes and races of the world. To this sea border must be ascribed the share that France has taken in the history of North and South America, the West Indies, North and Equatorial Africa, India, China and the South Seas. So we find the great maritime peoples of the world, from the Phoenicians to the English, each figuring in the history of the world of its day, and helping weave into a web of universal history the stories of its various parts.
Origin of navigation.
Man's normal contact with the sea is registered in his nautical achievements. The invention of the first primitive means of navigation, suggested by a floating log or bloated body of a dead animal, must have been an early achievement, of a great many peoples who lived near the water, or who in the course of their wanderings found their progress obstructed by rivers; it belongs to a large class of similar discoveries which answer urgent and constantly recurring needs. It was, in all probability, often made and as often lost again, until a growing habit of venturing beyond shore or river bank in search of better fishing, or of using the easy open waterways through the thick tangle of a primeval forest to reach fresh hunting grounds, established it as a permanent acquisition.
Primitive forms.
The first devices were simply floats or rafts, made of light wood, reeds, or the hollow stems of plants woven together and often buoyed up by the inflated skins of animals. Floats of this character still survive among various peoples, especially in poorly timbered lands. The skin rafts which for ages have been the chief means of downstream traffic on the rivers of Mesopotamia, consist of a square frame-work of interwoven reeds and branches, supported by the inflated skins of sheep and goats;[528] they are guided by oars and poles down or across the current. These were the primitive means by which Layard transported his winged bull from the ruins of Nineveh down to the Persian Gulf, and they were the same which he found on the bas-reliefs of the ancient capital, showing the methods of navigation three thousand years ago.[529] Similar skin rafts serve as ferry boats on the Sutlej, Shajok and other head streams of the Indus.[530] They reappear in Africa as the only form of ferry used by the Moors on the River Morbeya in Morocco; on the Nile, where the inflated skins are supplanted by earthen pots;[531] and on the Yo River of semi-arid Sudan, where the platform is made of reeds and is buoyed up by calabashes fastened beneath.[532]