Or one may say that the old view started from the sane mind as the normal, permanent, definite entity from which insanity was the unaccountable aberration; while in the new view it is rather sanity which needs to be accounted for; since the moral and physical being of each of us is built up from incoördination and incoherence, and the microcosm of man is but a micro-chaos held in some semblance of order by a lax and swaying hand, the wild team which a Phaeton is driving, and which must needs soon plunge into the sea. Theories like this are naturally distasteful to those who care for the dignity of man. And such readers may perhaps turn aside in impatience when I say that much of this paper will be occupied by some reasons for my belief that this analysis of human consciousness must be carried further still; that we must face the idea of concurrent streams of being, flowing alongside but unmingled within us, and with either of which our active consciousness may, under appropriate circumstances, be identified. Many people have heard, for instance, of Dr. Azam’s patient, Félida X., who passes at irregular intervals from one apparent personality into another, memory and character changing suddenly as she enters her first or her second state of being. Such cases as hers I believe to be but extreme examples of an alternation which is capable of being evoked in all of us, and which in some slight measure is going on in us every day. Our cerebral focus (to use a metaphor) often shifts slightly, and is capable of shifting far. Or let me compare my active consciousness to a steam-tug, and the ideas and memories which I summon into the field of attention to the barges which the tug tows after it. Then the concurrent streams of my being are like Arve and Rhone, contiguous but hardly mingling their blue and yellow waves. I tug my barges down the Rhone, my consciousness is a _blue_ consciousness, but the tail barge swings into the Arve and back again, and brings traces of the potential _yellow_ consciousness back into the blue. In Félida’s case tug and barges and all swerve suddenly from one stream into the other; the blue consciousness becomes the yellow in a moment and altogether. Transitions may be varied in a hundred ways, and it may happen that the life-streams mix together, and that there is a memory of all.