1 2 3 4 5 6 P M P M P M P M P M P M I. 22 32.5 23.5 32 23.5 32 22.5 32.5 23.5 31.5 21 39 II. 24.5 32.5 31.5 49.5 32 39 36 36 33.5 42 28.5 35 III. 8.5 23.5 0 36 0 31.5 11.5 5.5 8.5 14 3.5 8.5 IV. 30 49.5 30.5 42 24 48 27.5 44 28 40.5 43.5 34.5 V. 55.5 55.5 54.5 54.5 46.5 53 34 36 41.5 47 31 35.5 VI. 19.5 22.5 19.5 28 19.5 28.5 26.5 27.5 24.5 29.5 18.5 36 VII. 45 56.5 47.5 55.5 40.5 40 48 54 33.5 50 41 42.5 VIII. 19.5 24 0 40 27.5 20.5 13.5 23 16 25 23 34.5 IX. 28 49.5 26.5 48.5 27.5 45 18 45 21.5 48.5 42.5 44.5 X. 8 43.5 22 29 8.5 43.5 9.5 42.5 16 35 12.5 40.5 XI. 5.5 42.5 7.5 35.5 16.5 35.5 7.5 41 10 41.5 8 32.5 24.18 39.27 23.91 40.95 24.18 37.86 23.14 35.18 23.32 36.77 24.82 34.82 Indiv. Aver. P M I. 22.666 33.250 II. 31.000 39.000 III. 5.333 19.833 IV. 30.583 43.083 V. 43.833 46.916 VI. 21.333 28.666 VII. 42.583 49.750 VIII. 16.583 27.833 IX. 27.333 46.833 X. 12.750 39.000 XI. 9.166 38.083 23.92 37.48 _P_: Plain. _M_: Marked. General average: Plain, 23.92 sec.; Marked, 37.48 sec. Series No. VI._--Both the figures in each pair of this series were of the same material (granite-gray cardboard) and of the same area and outline, but the content of one of the two was varied with dark lines for the most part concentric with the periphery. The advantage on the side of the figures with a varied content is marked, the general averages showing a greater difference than is shown in any of the tables so far considered. And the advantage appears on the same side both in the individual averages and in the averages for the different pairs as shown at the foot of the columns. There can be little doubt, accordingly, that we have here the expression of a general law. For the meaning of this law we may consult the notes of the subjects: 'The plain figure became a mere amorphous mass;' 'the inner lines reinforce the shape, for while previously the number of points in this star has increased (in ideation), here the number is fixed, and fixed correctly;' 'my attention traversed the lines of the content, and seemed to be held by them;' 'the variety of the marked objects was felt as more interesting;' 'the attention was more active when considering the marked figures, passing from point to point of the figure;' 'the surface of the plain figure was attended to as a whole or mass, without conscious activity;' 'in the plain figure I thought of the gray, in the marked figure I thought of the lines;' 'part of the plain figure tended to have lines.'