The beaver gnaws down the tree with his teeth from generation to generation in precisely the same manner; but man is a being more nobly endowed than the beaver, and no sooner had he occasion to fell trees, than something of the nature of an axe suggested itself to his ingenuity. It is true, that his earliest attempts at axe-making were probably of the rudest sort, but just as soon as anything was devised, whether of flint or shell or metal, that rendered easier the felling of a tree, Capital made a beginning along that line of obstacles. Our chief interest in studying the implements of the successive so-called Ages of Stone and Bronze and Iron, is to witness the increasing degrees of ingenuity displayed by those pre-historic men. Among the more gifted races, progress in this direction was perhaps more rapid than we are wont to think it was, since Tubal-Cain, the first artificer of record, is said to have "_hammered all kinds of implements out of copper and iron_" (Gen. iv, 22). Lucretius, writing in the century before the Christian era, put down the following lines in vigorous Latin, as translated by Mason Good:-- "Man's earliest arms were fingers, teeth, and nails, And stones, and fragments from the branching woods; Then copper next; and last, as later traced, The tyrant iron." We are at no loss, then, to explain the origin of Capital and its motives. Tools are invented and employed for no other reason than this, that, by means of their help, the human efforts are lessened relatively to the given satisfactions. Since it requires tools to make tools, the progress of this branch of capital must have been relatively slow at first; but, since every advance in mechanical contrivance makes still further advances easier, there is a natural tendency, which facts abundantly exemplify, to a more and more rapid progression in the number and perfection of all implements of production. The same motive that impelled to the first invention, has impelled to the whole series of inventions since, and will constantly impel to further inventions till the end of time. Every step of this progress gives birth to a larger and still larger proportion of satisfactions relatively to efforts; marks an increasing control on the part of man over the powers of Nature; and gives promise for the time to come of greater advantages still in both of these directions. The powers of Nature, such as those which make the grain grow, bring the tree down, turn the water-wheel, impel the locomotive, and send the message round the world, all stand ready to slave in the service of man; but in order to make their aid available for human purposes, there must be a plough, an axe, a wheel, an engine, an electric machine; and it is because capital brings gratuitous natural forces into service, and the more so as capital progresses, that the Value of those commodities produced by the aid of capital tends constantly to