The maximum is reached in No. 1_a_, where the angle has the arrowhead form and each angle points to the other. It should be remarked that the diagram is somewhat misleading in respect to the distance of the figures, which in this as in the other experiments was 25 cm. The figures therefore were far enough away from each other to be perceived and imaged in individual distinctness. But the 'energy' of the lines, especially where the lines united to form an acute angle, was often sufficient to overcome the effect of this separation, and either to bring the figures nearer together or to unite them into a single object. The notes are very decisive in this regard. A few of them may be cited: "The angles tended to join points." "The figures showed a tendency to move in the direction of the apex." "The angles (2_a_) united to form a cross." "When both figures (4_b_) were in mind I felt disagreeable strains in the eyeballs; one figure led me to the right and the other to the left." The effect of the last-named figures (4_a_) seemed to be different from that of 1_a_ and 2_a_, though the apex of each angle was turned to that of the other in each of the three cases. "The two angles," says another subject, speaking of 4_a_, "appeared antagonistic to each other." It will be observed that they are less acute than the other angles referred to, and the confluent lines of each figure are far less distinctly directed towards the corresponding lines of the opposing figure, so that the attention, so far as it is determined in direction by the lines, would be less likely to be carried over from the one image to the other. On the other hand, when the angles were turned away from each other the legs of the angles in the two figures compared were brought into closer relation, so that in 2_b_, for instance, the average is even higher than in 2_a_. Similarly the average in 3_b_, an obtuse angle, is higher than in 3_a_. The notes show that in such cases the contrasted angles tended to close up and coalesce into a single figure with a continuous boundary. "The ends (2_b_) came together and formed a diamond." "When the angles were turned away from each other the lines had an occasional tendency to close up." "There was a tendency to unite the two images (4_a_) into a triangle." "The two figures seemed to tug each other, and the images were in fact a little closer than the objects (4_a_)." "The images (4_a_) formed a triangle." So with regard to the figures in 5_a_. "When both were in the field there seemed to be a pulling of the left over to the right, though no apparent displacement." "The two figures formed a square."