in a sentence occurring in a conversation on indifferent matters, or by a dimly conscious perception of the environment, sometimes an idea occurring as a secondary train of thought perhaps bearing upon some future course of action, and so on. As instances of such dimly-conscious perceptions of the environment which I have found I may mention a gateway through which the subject was passing, or a bridge about to be crossed; these particular points in the environment being places where previous attacks had occurred. The perceptions which precipitated the attack may have been entirely subconscious and yet may be brought back to memory. With the pathogenesis of the attacks we are not now directly concerned. The point of interest for us lies in the fact that such forgotten casual ideas and perceptions, some of which had been actually subconscious and some had only entered the margin of the focus of attention may, notwithstanding the amnesia, be conserved; and the same is true of any succession of trivial ideas occurring at an inconsequential moment in a person’s life. However that may be, if you will try to recall in exact detail the thoughts and feelings which successively passed through your mind at any given moment say three or four weeks ago—or even days ago—and their accompanying acts, and then (if you can do this, which I very much doubt) try to give them in their original sequence, I think you will realize the force of these observations and appreciate the significance of the conservation of such minute experiences and of their reproduction in abstraction.