It seems to me not unnecessary to keep on reminding students of the far-reaching changes which psycho-analytic technique has undergone since its first beginnings. In its first phase—that of Breuer's catharsis—it consisted in bringing directly into focus the moment at which the symptom was formed, and in persistently endeavouring to reproduce the mental processes involved in that situation, in order to direct their discharge along the path of conscious activity. Remembering and abreacting, with the help of the hypnotic state, were what was at that time aimed at. Next, when hypnosis had been given up, the task became one of discovering from the patient's free associations what he failed to remember. The resistance was to be circumvented by the work of interpretation and by making its results known to the patient. The situations which had given rise to the formation of the symptom and the other situations which lay behind the moment at which the illness broke out retained their place as the focus of interest; but the element of abreaction receded into the background and seemed to be replaced by the expenditure of work which the patient had to make in being obliged to overcome his criticism of his free associations, in accordance with the fundamental rule of psycho-analysis. Finally, there was evolved the consistent technique used today, in which the analyst gives up the attempt to bring a particular moment or problem into focus. He contents himself with studying whatever is present for the time being on the surface of the patient's mind, and he employs the art of interpretation mainly for the purpose of recognizing the resistances which appear there, and making them conscious to the patient. From this there results a new sort of division of labour: the doctor uncovers the resistances which are unknown to the patient; when these have been got the better of, the patient often relates the forgotten situations and connections without any difficulty. The aim of these different techniques has, of course, remained the