patients know more about one another than the physician knows about each of them, and they are concerned about each other when the visit of the doctor is over. Some of them have an attack to-day: soon it is known among the rest that a letter from home, a return of lovesickness or the like, is the cause of it. Their sympathy is aroused, and the following syllogism, which does not reach consciousness, is completed in them: “If it is possible to have this kind of an attack from such causes, I too may have this kind of an attack, for I have the same reasons.” If this were a cycle capable of becoming conscious, it would perhaps express itself in fear of getting the same attack; but it takes place in another psychic sphere, and, therefore, ends in the realization of the dreaded symptom.

Identification is therefore