LIST OF ILLUSTRATIONS PAGE FIGURE i, illustrating R.'s pencilings in the twelfth, thirteenth, fourteenth, sixteenth, eighteenth and twenty-fourth months 46 « 2, illustrating the " pictorial evolution of a * man' "... 57 " 3, illustrating seven stages in R.'s learning to draw a horse, 62 " 4, four stages in learning to draw " choo-choo " (locomo- tive) 65 " 5, contains a miscellaneous collection of drawings, — an elephant, a " wow-wow," a triangle, a right angle, a square, and an O 69 " 6, reproduction of the drawings of the human face which were used in the experiments described in the section on Pictures 262 PLATE I (facing page 16), illustrating five changes in the posi- tions of the hands in learning to catch a ball. PLATE II (facing page 72). Fig. 1, R. throwing pebbles on ice (" boad ") to see them glide — thirty-sixth month ; Fig. 2 shows grimaces when unable to recall form name of a card — see pages 176 and 223 ; Fig. 3, showing expres- sion of slight fear which R. experienced when he was lifted and set astride the limb of a tree, see page 1 I2f. ; Figs. 4 and 5 give J.'s expression when he was re- proved (twentieth month) ; Figs. 6 and 7 show the posi- tion of the hand for two periods (tenth and twenty-ninth months) when reaching for desired objects. PLATE III (facing page 124). Figs. 1 and 2 illustrate two imita- tive movements described on page 134; Fig. 3 illus- trates an early form of the imitative shake of the hand — see page 128; Fig. 4 is a " sleepy rub" of the eyes and nose ; Fig. 5 shows a seventeen months old child's manner of grasping a spoon when feeding himself. xiii
