But these symptoms had one by one disappeared during his five-weeks stay with me. He had done good stiff work in the garden, carried a heavy sack of grapefruit a mile in the hot sun, and was generally his old self again. Now he was back in the harness, hard at work as of old. Suddenly, as he sat reading in his home one evening, all his old symptoms swept over him,--the pains in his head and legs, the pounding of the heart, the "all-gone" sensations as though he were going to die on the spot. He became almost completely dissociated, but through it all he clung to the idea which he had learned,--namely that this experience was not really physical as it seemed but was the result of some idea, and would pass. He did not tell any one of the attack, ignored it as much as possible, and waited. In a few minutes he was himself again. Then he looked for the cause and realized that the article he was reading was one he had read several months previous, when suffering most severely from the whole train of symptoms. When the familiar words had again gone into his mind, they had pressed the button for the whole physiological experience which had once before been associated with them. This is the same mechanism as that involved in Prince's case, Miss Beauchamp, who became completely dissociated at one time when a breeze swept across her face. When Dr. Prince looked for the cause, he found that once before she had experienced certain distressing emotions while a breeze was fanning her cheek. The recurrence of the physical stimulation had been sufficient to bring back in its entirety the former emotional complex.