The step by which the universality or unity of the self is realised in the variety of its sensation is Habit. Habit gives us a definite standing-ground in the flux of single impressions: it is the identification of ourselves with what is most customary and familiar: an identification which takes place by practice and repetition. If it circumscribes us to one little province of being, it on the other frees us from the vague indeterminateness where we are at the mercy of every passing mood. It makes thus much of our potential selves our very own, our acquisition and permanent possession. It, above all, makes us free and at one with our bodily part, so that henceforth we start as a subjective unit of body and soul. We have now as the result of the anthropological process a self or ego, an individual consciousness able to reflect and compare, setting itself on one side (a soul in bodily organisation), and on the other setting an object of consciousness, or external world, a world of other things. All this presupposes that the soul has actualised itself by appropriating and acquiring as its expression and organ the physical sensibility which is its body. By restricting and establishing itself, it has gained a fixed standpoint. No doubt it has localised and confined itself, but it is no longer at the disposal of externals and accident: it has laid the foundation for higher developments. (ii.) Anomalies of Psychical Life. Psychology, as we have seen, goes for information regarding the earlier stages of mental growth to the child and the animal,—perhaps also to the savage. So too sociology founds certain conclusions upon the observations of savage customs and institutions, or on the earlier records of the race. In both cases with a limitation caused by the externality and fragmentariness of the facts and the need of interpreting them through our own conscious experiences. There is however another direction in which corresponding inquiries may be pursued; and where the danger of the conclusions arrived at, though not perhaps less real, is certainly of a different kind. In sociology we can observe—and almost experiment upon—the phenomena of the lapsed, degenerate and criminal classes. The advantage of such observation is that the object of study can be made to throw greater light on his own inner states. He is a little of the child and a little of the savage, but these aspects co-exist with other features which put him more on a level with the intelligent observer. Similar pathological regions are open to us in the case of psychology. There the anomalous and morbid conditions of mind co-exist with a certain amount of mature consciousness. So presented, they are thrown out into relief. They form the negative instances which serve to corroborate our positive inductions. The regularly concatenated and solid structure of normal mind is under abnormal and deranged conditions thrown into disorder, and its