This brings us to the eighteenth century, which directly concerns us, because the religious superstition, which had previously caused men to seek in a conscious supreme energy the effective motor in human affairs, had waned, and the problem presented was reduced to the operation of that acceleration of movement by the progress of applied science which always has been, and always must be, the prime cause of the quickening of economic competition either as between communities or as between individuals. And this is the capital phenomenon of civilization. For it is now generally admitted that war is nothing but economic competition in its acutest form. When competition reaches a certain intensity it kindles into war or revolution, precisely as when iron is raised to a certain heat it kindles into flame. And, for the purposes of illustration, possibly the best method of showing how competition was quickened, and how it affected adjacent communities during the eighteenth century, is to take navigation, not only because navigation was much improved during the first three quarters of that period, but because both England and France competed for control in America by means of ships. It suffices to mention, very succinctly, a few of the more salient advances which were then made. Toward 1761 John Harrison produced the chronometer, by which longitude could be determined at sea, making the ship independent in all parts of the world. At the same time more ingenious rigging increased her power of working to windward. With such advantages Captain Cook became a mighty discoverer both in the southern and western oceans, charted New Zealand and much else, and more important than all, in 1759 he surveyed the Saint Lawrence and piloted ships up the river, of which he had established the channel. Speaking of Cook naturally leads to the solution of the problem of the transportation of men, sailors, soldiers, and emigrants, on long voyages, thereby making population fluid. Cook, in his famous report, read before the Royal Society in March, 1776, after his second voyage, established forever the hygienic principles by observing which a ship’s company may safely be kept at sea for any length of time. Previously there had always been a very high mortality from scurvy and kindred diseases, which had, of course, operated as a very serious check to human movement. On land the same class of phenomena were even more marked. In England the Industrial Revolution is usually held to date from 1760, and, by common consent, the Industrial Revolution is attributed altogether to applied science, or, in other words, to mechanical inventions. In 1760 the flying-shuttle appeared, and coal began to replace wood for smelting. In 1764 Hargreaves invented the spinning-jenny; in 1779 Crompton contrived the mule; and in 1768 Watt brought the steam-engine to maturity. In 1761 the first boat-load of coals sailed over the Barton viaduct, which James Brindley built for