What reason is there to doubt that the rude bark-float of the Australian, the Tasmanian, and the Ethiopian; the catamaran of the Papuan; the dug-out of the New Zealander; the built-up canoe of the Samoan; and the improved ribbed vessel of the Ke islander, are survivals representing successive stages in the development of the art of ship-building, not lapses to ruder methods of construction as the result of degradation; that each stage supplies us with examples of what was at one time the perfection of the art, inconceivable ages ago? Some, as we have seen, especially the more primitive kinds, spread nearly all over the world, whilst others had a more limited area of distribution. Taken together, they enable us to trace back the history of ship-building from the time of the earliest Egyptian sculptures to the commencement of the art.
Nor does the interest of this inquiry confine itself to the development of ship-building. As affecting the means of locomotion, it throws light on the development of other branches of culture in early times. For even if we set aside exceptional instances in which individual canoes have been driven away to great distances--such as the case in which an Esquimaux in his kayak was picked up off the coast of Aberdeen, or that of a Chinese junk having been wrecked on the north-west coast of America, which might or might not have produced permanent results--and confine ourselves to those cases in which the distribution of like forms of vessels proves that there must probably have been frequent communication between shore and shore; and if we further assume, as I propose to do, that the existing means of communication in the Pacific in a great measure represents the amount of intercourse that took place across the sea in prehistoric times, that is to say, in times prior to the earliest Egyptian sculptures, we find no difficulty in accounting, by this means, for the striking similarity observable in the arts and ideas of savages in distant lands; for not only have these vessels been the means of conveying from place to place the material form of implements, such as celts, stone knives, and so forth, which, being imperishable, have been handed down to us unchanged, and the forms of which we know to have spread over large geographic areas; but also each voyage has conveyed a boat-load of ideas, of which no material record remains, in the shape of myths, religions, and superstitions, which have been emptied out upon the seashore, to seek affinity with other chatter that was indigenous to the place.