language inevitably call up associations which may be out of place in the discussion. To say that an amœba _learns_ to reject certain foreign particles in a solution, for instance, is a statement that requires careful interpretation. How are we to picture an amœba _learning_ something? But, indeed, the danger of anthropomorphic interpretations becomes very obvious when we reflect on the purely physical phenomena which accompany man’s own emotions. If the James-Lange theory be correct, it is in terms of these physical phenomena that we must understand man’s emotions. Now consider the example given in Washburn’s book, _The Animal Mind_. An angry man has a quickened heartbeat, altered breathing, a change in muscular tension, and a change in the blood. Consider a wasp. It has no lungs, but breathes through its tracheæ; the circulation of its blood is fundamentally different from that in man; all its muscles are attached internally because its skeleton is everywhere external. What, then, is an “angry” wasp? It seems clear that if a man is to study anything but man he must forget himself as far as possible. ON LEARNING SCIENCE It is a well-known fact that a really intelligent child finds great difficulty in believing that the earth is round. Stupid children, on the other hand, believe anything they are told. The difficulty experienced by the first child is due to the fact that, in however elementary a way, it is conscious of the implications of the statement. The stupid child seems to be unaware that the statement has any implications; it seems able to accept almost any statement in some curiously bare, unrelated fashion. Hermann Bahr has an interesting and amusing story of how profoundly his faith in his father was shaken when the latter, _à propos_ of a sunset, told the young boy that in reality it was the earth that turned round and not the sun. Completely overwhelming objections to this statement rose instantly in young Hermann’s mind, and, outraged by this insult to his intelligence, he preserved a hurt and dignified silence that lasted for days.