It is to be noted that in this figure the tracing marked I. was obtained with the subject seated, and the metronome beating behind him; the hand after some hesitation moves backward slowly towards the metronome to a moderate extent. In tracing II., with the subject also seated, the metronome is to the front, and the hand moves directly and quickly towards it. We conclude that the position of the body is an important factor in the resultant movements, but that it does not interfere with their accepted psychological interpretation. [Illustration: FIG. 14.--COUNTING THE STROKES OF A METRONOME. Subject seated. In tracing I. the metronome is at the rear. Time of record, 105 seconds. Direction of the attention ←. Subject facing →. In tracing II. the metronome was to the front. Time of record 45 seconds. Direction of the attention →. Subject facing →. ⅘ size.] [Illustration: FIG. 15.--COUNTING THE STROKES OF A METRONOME. Time of record, 45 seconds. The upper tracing shows the movements of the head recorded upon a plate resting on the head. The lower tracing shows the usual record of the hand upon the automatograph. Direction of the attention →. Subject facing →.] When observing the subject during a test, we may note the movements of the body as a whole, and of the arm or hand. The movement of the body is an irregular swaying with the feet as the centre of the movement; this swaying is most readily recorded by fixing the recording-plate upon the subject's head, and having the recording-rod held in a suitable position above it. It was found that in connection with the swaying movements there were general movements towards the object of attention; and such movements were as readily made when the object was to the front, to the rear, or to either side. To determine how far this movement is the same in head and hand, it is necessary to record both simultaneously. Fig. 15 illustrates the correspondence of the two movements. It thus becomes clear that the swaying of the body as a whole constitutes an important factor of these automatograph records; that the movements of the head (being farther away from the centre of motion) are more extensive than those of the hand; and that both head and hand are sensitive organs for the expression of involuntary movements. That the muscle-reader is aware of this fact is obvious from the usual positions which he maintains towards his subject in reading the direction of the hidden object. [Illustration: FIG. 16.--COUNTING THE STROKES OF A METRONOME. Right hand holds the pencil, and left hand holds the record plate. Direction of metronome →. Subject facing →. In the upper tracing the subject was standing; time of record, 90 seconds. In the lower tracing the subject was sitting; time of record, 90 seconds.]