The maritime or boat-building instinct has, at all events, been very much under the control of circumstances. Sometimes the tree was felled and hollowed, sometimes the bark was stretched over wicker-work, or skins of beasts were employed, or planks were made into a raft. The Egyptian bound some of his water-jugs together and made a raft of them. Some tribes have limited themselves to the paddle or the oar; some have spread the sail, and spread it very boldly. The Malay hoists his large sail over a couple of planks of wood sewed together with bark, and balances this fragile craft by means of two long spars fastened athwart and projecting to windward. In such a vessel as this he will scud fearlessly through tempestuous seas from one island to another. We may boast, and very justly, of our steam-engines, our electric telegraphs, and of other triumphant employments of the powers of nature; but even to this day there is not a more pleasing or thrilling spectacle, or a more glorious instance of the powers of nature turned to the service of man, than when some solitary boatman sits, at the helm with sail outspread, borne by the wind along the surface of the sea. The water floats him, the wind speeds him; he is for the moment master of the two great elements. Verily the savage has his joy, his hour of pride and exultation. It is curious that the natives of North America limited themselves to the oar or the paddle. The Peruvians appear to have been the only people of this continent who, at the time of its discovery by Columbus, employed the sail. This is a striking instance of the very general fact, almost amounting to a law, that when a people have attained to a certain proficiency in the arts, sufficient to render life tolerable, there ensues a long pause in the career of progress. It requires the stimulus of an urgent want to set at work the inventive faculties of the savage; and when his invention has secured to him an agreeable existence, or what he considers such, there intervenes the force of habit and the attachment to familiar customs. Fortunately the differences of climate, or other external circumstances, require or suggest different inventions, even in this early stage of society, and thus one barbarian may be able to teach another. A people who had brought the canoe propelled by oars to perfection, would probably rest contented with it; they could not have invented the sail themselves; they might receive it from another people with whom it had been, from the commencement, their favourite mode of traversing the sea. Our “technological instincts,” as Mr Wilson calls them, go to sleep in the savage when he is no longer pinched by hunger or cold, or other pressing inconvenience. They awake again in the civilised man, with whom invention itself has become an agreeable effort or an intellectual triumph. Some sort of culinary vessels are wanted, and if these have been once shaped out of clay, the