C. H. A brother to case K. About 24 years old when photo was taken. Note the asymmetry of the face and the markedly degenerate ears. C. is the first child, born after long and difficult labor; instru- mental delivery. He did not speak until three years old. He is slow and indolent, but has orderly habits, and is able to care for himself. He is fairly obedient but is very easily influenced by the other boys. He made frantic efforts to learn to read and write, without marked success. He became a most cleanly and dependable kitchen aid, learning to prepare vegetables and to do errands accurately. He takes anything he wants, but does not call it stealing. CASE K.—MIDDLE-GRADE IMBECILE. M. H. was 12 years old when photo was taken. She has six brothers living: one, the oldest, case J, is feeble-minded; the next is “backward and delinquent;" the third is a low-grade imbecile; and three brothers died in infancy. The father, a laborer, was 39 and the mother 32 at the time of this, the sixth child's birth. The father was a drunkard, and brutal; the mother is extremely nervous and suffers from dizzy headaches. The paternal grandmother has a most violent temper. The home environment is described as “the worst pos- ible,” M. is very nervous. She accomplished but little in school. She can read and write only in a very rudimentary way, and knows almost nothing of numbers; but does good handwork. She learned to hemstitch and outline very neatly, to knit socks, and to make a very