Now one word about conflicts. Undoubtedly conflicts play a most important part in such psychological disturbances as we have to deal with in the psycho-neuroses, but I cannot agree that psychological conflicts conform only to, or are synonymous with ethical conflicts. Undoubtedly there are a large number of conflicts between ideas and sentiments which we have all agreed to label as ethical, but there are also a large number of conflicts between sentiments which cannot be pigeon-holed as ethical. For example, the mother whose child is threatened with danger and who herself would incur danger in rescuing her child, undergoes a conflict between her fear instinct, on the one hand, and her love on the other, exciting also her anger emotion. The anger and love conflict with the fear, down and repress it. There you have a conflict but I think it could not be classed as an ethical conflict. It is a general law, whenever one instinct antagonizes another instinct there is a conflict. It is a conflict which has its prototype in the lower organic processes. Thus Sherrington's spinal reflexes, that he has worked out so beautifully, involve conflicts between opposing organic impulses. In the scratch reflex, for instance, the impulse which excites the flexor muscles inhibits the excitation of the extensor muscles. I believe this principle underlies the higher processes and upon it is built up the whole of the psycho-physiological mechanisms. DR. TOM A. WILLIAMS, Washington, D. C.: I want Dr. Putnam to reply to two objections to his position. One, the manifestations of functional capacities which are themselves dependent upon structural differences. I am not talking now of psychogenetic determinants, but alone of the trends of which Dr. Putnam has spoken. Is he not assuming the contrary to Darwin when he says that function precedes structure? Are not the potentials dependent upon the variation which has determined this function? I am speaking now in the broadest possible terms and not confining myself to the cerebrum. Do we not find it in the tadpole who is prepared for breathing not because he wants to breathe, but because he is going to have a new kind of breathing apparatus and the duck who takes to the water because he has the mechanism to swim?