Every object, as I have said, must, by virtue of its existence, have its fit place and use; but, in a world that was the dice-work of chance, there would be myriads of probabilities to one against any specific object's attaining to its fit place and use. This must be the work of will alone. If chance can create, it cannot combine, co-ordinate, organize. If it can throw letters on the ground by the handful, it cannot arrange them into the Iliad or the Paradise Lost. If it can stain the sky or the earth with gorgeous tints, it cannot group them into a Madonna or a landscape. Its universe would be peopled by straylings, full of disjointed halves of pairs,--of objects thrown together in such chaotic heaps that seldom could any one object find its counterpart or subserve its end. The opposite is the case in the actual world. The first discoveries which the first human being made were of the fitnesses of the objects around him to himself and to one another. With every added year his microcosm enlarged, so that, before he left the world, he had within his cognizance a range of fitnesses and uses sufficient to guide his own activity, and to enable him to predict its results, together with numerous other results not contingent on his own agency. Beyond this microcosm, indeed, lay a vast universe impenetrable to his search, in which he could trace no relations, no filaments of order; in which all seemed to him a medley of chaotic confusion, mutually intruding systems, clashing and jarring forces. On this realm of the unknown man has ever since been making perpetual aggressions; and every step of his progress has been the discovery of fitnesses, relations, reciprocal uses, among the most remote, diverse, and at first sight mutually hostile objects, classes, and systems. Natural history, physics, and chemistry, are the science of mutual fitnesses and uses among terrestrial objects. Astronomy is the science of harmonies among all the worlds,--of fitnesses in their relations and courses to the condition of things in our own planet, approximately to other bodies in the solar system, and, by ascertained analogies, to those distant orbs of which we know only that they stand and move ever in their order. Geology is the science of mutual fitnesses in former epochs and conditions of our own planet, and of prospective fitnesses in them to the needs and uses of the present epoch; so that by harmonies which run through unnumbered æons we are the heirs, and sustain our industries by the usufruct, of the ages, the great moments of whose history we are just beginning to read. Mathematical science reveals geometrical and numerical fitnesses, proportions, and harmonies, which are traced alike in the courses of the stars and in the collocation of the foliage on the tree, and which promise one day to give us the equation of the curve of the sea-shell, of the contour of the geranium-leaf, of the crest of the wave. There is