L. PIERCE CLARK: For the time being I am anxious to limit my remarks to the mechanism of ESSENTIAL epilepsy, and, not to convulsive disorders in general, however closely allied to idiopathic epilepsy. At some future time I hope to take up the epileptoid convulsions and show their relationship and variation from that of the mechanism of essential epilepsy. I may say, however, that I have some data already at hand in which certain types of epileptic phenomena connected with infantile cerebral hemiplegia would show that the so-called epileptic constitution is much less marked in these cases, but is present, however, to a certain degree. As has been well known for a number of years and commented upon by such observers as Gowers, Jackson and Binswanger, the so-called hemiplegic epilepsies sooner or later develop the epileptic alteration in a character analogous to that seen in idiopathic epilepsy. I hope to show that the main roots of the so-called epileptic alteration in general necessarily lie in the primary make-up of such individuals, and that the seizure phenomena of epilepsy only intensify and make more marked the fundamental make-up when the disease has definitely fastened itself upon the individual. My next paper on this whole subject will attempt to show more conclusively that the epileptic seizures are but an unfoldment of that which has already been existent in the biological make-up of the individual epileptic. DR. TRIGANT BURROW, Baltimore, Md., read a paper entitled "Material Illustrative of the 'principle of Primary Identification.' "[*] [*] Reserved for publication. DISCUSSION DR. JAMES J. PUTNAM, Boston: I am very much interested in Dr. Burrow's paper and understand it as illustrating the argument brought forward by him last night. As I remember the situation I do not quite see why this idea is not essentially the same that has been endorsed by Freud and others. One's interest in one's self is certainly in part the basis of homosexuality, and this is intensified by the reflection from the mother.