Hearings before the Committee on judiciary of the U. S. House of representatives, April 25, 1902.
Running title: Study of the abnormal classes.
Hearing is followed by "Bibliography of genius, insanity, idiocy, feeblemindedness, alcoholism, pauperism, and crime" reprinted from "Abnormal Man", Circular of Information No. 4, Bureau of Education (p. 139-304).