attempt, sometimes successful, marks an origin of a new mode of conscious emotion which may never return to the individual again during all its future life for lack of occasion. If often returning and often improved, a definite new habit of emotion is established, and from being a fearful animal it may at length become dominantly irascible, and so belong to a totally distinct psychic genus. By the evolution of anger then, as in contradistinction to fear, two grand divisions of animate existence were set apart, two great psychical orders as fundamentally distinct and important for evolutionary psychics, as invertebrate and vertebrate for biology. The rise of the back-boned animal is not more important for physiological morphology than the evolution of anger for psychical morphology, and, indeed, as we have before remarked, the psychical growth is ever the broadest and deepest fact in evolution. By the acquirement and predominance of the anger stimulus certain animals became differentiated as a distinct class from their fearful neighbours, and they then by this new impulse gradually attained instruments of offence, and also by increase of size became physically distinct forms. Henceforth the animate world becomes divided in a more and more marked way into pursuers and pursued. By mutual interaction fear is increased on one side as anger increases on the other, and the division into timid and fierce, predacious and prey, becomes more and more established and marked. We take it then that it was a most momentous day in the progress of mind when anger was first achieved, and some individual actually got mad. If the exact date and the particular individual were ascertainable a memorial day set apart for all time would not be too great an honour. In the struggle of existence, other things being equal, the most irascible is the most successful, faring the best, securing the best mate, and having the best and most numerous progeny. Susceptibility to anger becomes a necessity to a large class of organisms, and those who will not get angry and fight for their interests are surely trampled on or pushed aside to become starveling or outcast.