Among the conserved forgotten experiences are often to be found fleeting thoughts, ideas, and perceptions, so insignificant and trifling that it would not be expected that they would be remembered. Some of them may have entered only the margin or fringe of the content of consciousness, and, therefore, the subject was only dimly aware of them. Some may have been so far outside the focus of awareness that there was no awareness of them at all, i.e., they were subconscious. Instructive examples of such conserved experiences may be found in persons who suffer from attacks of phobia, i.e., obsessions. The experiences to which I refer occur immediately before and during the attacks. After the attack the ideas of these periods are usually largely or wholly forgotten, particularly the ideas which were in the fringe of consciousness and the idea which, according to my observation, was the exciting cause of the attack. By the method of abstraction I have been able to recover the content of consciousness during the periods in question, including the fringe of consciousness, and thus discover the nature of the fear of which the patient was unaware because the idea was in the fringe. Mrs. C. D., whom I have mentioned as having suffered intensely from attacks of fear, and Miss F. E., who is similarly afflicted with such attacks accompanied by the feeling of unreality, are instances in point. As is well known such attacks come on suddenly in the midst of mental tranquillity, often without apparent cause so far as the patient can discover. While in the state of abstraction the thoughts, perceptions, and acts of the period just preceding and during the attack, as they successively occurred, could be evoked in these subjects in great detail and with striking vividness. The recovery of these memories has been always a surprise to the patient who, a moment before, had been utterly unable to recall them, and had declared the attack had developed without cause. In the case of Mrs. C. D. it was discovered in this way the real fear was of fainting and death, and in that of Miss F. E. of insanity. These ideas having been in the fringe of consciousness, or background of the mind, the subjects were at the time scarcely aware of them and, therefore, were ignorant of the true nature of their phobias, notwithstanding the overwhelming intensity of the attacks. Among the memories recovered in these and other cases I have always been able to find one of a thought or of a sensory stimulus from the environment which immediately preceded and which through association occasioned the attack. When this particular memory was recovered the patient, who had declared that the attack had developed without cause, at once recognized the original idea which was the cause of the attack, just as one recognizes the idea which causes one to blush. The idea sometimes has been a thought suggested by a casual and apparently insignificant word