its professors, without calling in the aid of imagination, is evident enough on this side of the globe, without travelling to the other. Take, on the other hand, a branch of science which, to the average layman, seems peculiarly unimaginative, the science of mathematics. Yet at the risk of appearing to cast doubts upon the validity of its conclusions, it might be called the most imaginative product of human thought; for it is simply one vast imagination based upon a few so-called axioms, which are nothing more nor less than the results of experience. It is none the less imaginative because its discoveries always accord subsequently with fact, since man was not aware of them beforehand. Nor are its inevitable conclusions inevitable to any save those possessed of the mathematician's prophetic sight. Once discovered, it requires much less imagination to understand them. With the light coming from in front, it is an easy matter to see what lies behind one. So with other fabrics of human thought, imagination has been spinning and weaving them all. From the most concrete of inventions to the most abstract of conceptions the same force reveals itself upon examination; for there is no gulf between what we call practical and what we consider theoretical. Everything abstract is ultimately of practical use, and even the most immediately utilitarian has an abstract principle at its core. We are too prone to regard the present age of the world as preeminently practical, much as a middle-aged man laments the witching fancies of his boyhood. But, and there is more in the parallel than analogy, if the man be truly imaginative he is none the less so at forty-five than he was at twenty, if his imagination have taken on a more critical form; for this latter half of the nineteenth century is perhaps the most imaginative period the world's history has ever known. While with one hand we are contriving means of transit for our ideas, and even our very voices, compared to which Puck's girdle is anything but talismanic, with the other we are stretching out to grasp the action of mind on mind, pushing our way into the very realm of mind itself. History tells the same story in detail; for the history of mankind, imperfectly as we know it, discloses the fact that imagination, and not the power of observation nor the kindred capability of perception, has been the cause of soul-evolution.