configuration, or construction, and proceeding by simple analysis with the aid of signs: which (with the necessary corrections and descriptions) would bring the first under the concrete, and the second under the audito-motor type. Among metaphysicians the typographical visual type seems largely to predominate. One (who is well known) belongs to the pure auditory type. All this, however, is inadequate; the investigation would have to be followed out, by and upon others. A young Russian doctor, M. Adam Wizel, who was interested in the subject, put the same questions (following the method indicated above) to persons in the hypnotic state. Admitting the unconscious mental activities to preponderate in this state he asked whether by this procedure it would not be possible to penetrate farther into the unknown substrate of consciousness. His experiments were undertaken at the Salpêtrière, in Charcot’s clinique, upon six women—hysterics of the first order. The subjects were first put into a state of somnambulism, then after a preliminary explanation were questioned, as above. After getting the answers Wizel ordered the subjects to forget all that had happened, and then woke them. He now began again in the waking state, asking the same questions, so that he was able to compare the answers given successively in the two cases. They are nearly always clearer and more explicit during somnambulism than during the waking state, as may be judged by the following example (taken from the third observation): QUESTIONS SOMNAMBULISM WAKING STATE Dog: A big grey animal Nothing Form: A red cardboard head Nothing Law: A tribunal Nothing Justice: A magistrate State of justice Number: Figure 12 in white The number of a note (?) Color: Green Blue Where the replies are concrete in the two cases I note a tolerable analogy between them. M. Wizel (who eliminated all doubtful cases, and any accompanied by crises) never encountered the typographical visual type, nor the pure auditory type, in his experiments. His six hysterics belong to the concrete type, with the predominance of _visual_ images—much more rarely of motor images, provoked by the word “force.” The answer “nothing” is very frequent; less so, however, during somnambulism than during the waking state. II.