was the neglect of the largest part of the material, the seizing of a few schematic ideas and principles, and their use for universal explanation. Very mechanical and very abstract to us, no doubt, seems their division of the mind into faculties, the classification of mental phenomena into the regular, graded, clear-cut series of sensation, image, concept, etc.; but let one take a look into the actual processes of his own mind, the actual course of the mental life there revealed, and he will realize how utterly impossible were the description, much more the explanation, of what goes on there, unless the larger part of it were utterly neglected, and a few broad schematic rubrics seized by which to reduce this swimming chaos to some semblance of order. Again, the history of all science demonstrates that much of its progress consists in bringing to light problems. Lack of consciousness of problems, even more than lack of ability to solve them, is the characteristic of the non-scientific mind. Problems cannot be solved till they are seen and stated, and the work of the earlier psychologists consisted largely in this sort of work. Further, they were filled with the Zeitgeist of their age, the age of the eighteenth century and the Aufklrung , which found nothing difficult, which hated mystery and complexity, which believed with all its heart in principles, the simpler and more abstract the better, and which had the passion of completion. By this spirit, the psychologists as well as