2. The outbreak of such _automatic memories_ is particularly prone to occur in persons of a particular temperament (the apprehensive temperament, in which the biological instinct of fear is the paramount factor), in fatigue states, and in so-called neurotic people—neurasthenics, psychasthenics, and hysterics. In such people the organization of the complex probably has been largely a previously _subconscious incubating process_, as in the phenomenon of “sudden religious conversion.” Later the sudden suggestion or awakening by whatsoever means of an idea, which has roots in the antecedent thoughts engaged in the subconscious process, readily gives occasion for the outbreak of the complex. The latter then excites the emotional reaction of anger, horror, antipathy, fear, jealousy, etc., which becomes incorporated in the complex. When once formed the automatism becomes the psychosis. The following case is an illustration: L. E. W., forty-nine years of age, farmer and lawyer by occupation, a man of strenuous disposition, broke down under stress and strain with severe but common symptoms of mental and physical fatigue modified and exaggerated by apprehensions of incurable illness. At the end of a year there developed scruples and jealous suspicions of his wife’s chastity, not persistent but recurring from time to time in attacks, and always awakened by a suggestion of some kind—an associated idea, a remark heard, an act of some kind on the part of the wife, etc. Between the attacks he was entirely free from such thoughts, but during the attack, which came on with the usual suddenness, these thoughts—always the same doubts, suspicions, reasonings, jealousy, and fear—were dominating, imperative, and painful. An open-minded, frank, intelligent man he fully realized that his scruples were entirely unfounded and even characterized them as “delusions.” It was interesting, so clear was he in this respect, to hear him discuss his attacks between times with his wife, as if they were recurrent appendicitis. The attacks would pass off in a short time after discussing his scruples with his wife, and then he became natural again; they involved great suffering and he feared, as people thus afflicted so often do, that they spelled impending insanity. And yet it was easy to determine that they were only _imperative recurrent memories_, conserved complexes emerging from the unconscious. He had been married twenty-two years. He was of a jealous nature, and before marriage it annoyed him to think that his wife had been courted by other men, that she wrote them letters, etc. He began to think of her as a flirt, that she was going to jilt him, and to have misgivings of her character. He grew jealous and suspicions of possible unchastity worried him, but reasoning with himself he would say, “O, pshaw! it is an abominable suspicion,” “an hallucination,” and put the thought out of his mind, as he said. But we know he really put the thought _into_ his