Education, a response to suggestion, 65;
  importance of, to the child, 77-78;
  of the subnormal and the backward, 237. 
Edwards, Jonathan, view held by, of punishment as vengeance, 17-19. 
Emerson, R. W., on non-obedience to law, 114. 
Emotions, factor of, in human action, 46-55;
  lack of satisfaction of, in American scheme of things, 55. 
England, system of justice in, 281. 
Environment, man the product of heredity and, 34-36;
  relation of heredity and, 37-40;
  adjustment of, to heredity, 41-43, 277-278;
  relation of, to development of criminal, 57-69;
  effects of, 201-202;
  necessity of improving, shown by studies of the Jukes and the
  Kallikaks, 244-249. 
Experts, medical, in courts, 143-149.

Factory system, growth of cities due to, 76;
  and crime, 203-212;
Fear, emotion of, in man, 46-47;
  instilling of, an object of punishment, 165. 
Feeble-minded, distinguishing between the normal and, 185-188.
  See Defectives. 
Feuds, family, 12. 
Flight, instinct of, in man, 46-47. 
Folk-ways, crime defined as violation of, 6-7;
  enforcement of, by primitive man, 8;
  present-day laws descended from, 28;
  are still a guide to man, 99-100. 
Forgers, development of, 66-68. 
Freedom of speech, loss of, as result of World War, 220.

Gang, the boy’s, 79. 
Genius, a frequent indication of insanity, 239. 
Girls, protected life of, as compared with boys, 72;
  sex crimes among, 90-91. 
Glands, the ductless, and their use, 33-34, 38, 174. 
Grant, General, on repealing of bad law, 130. 
Grasset, Joseph, “The Semi-Insane and the Semi-Responsible,” cited, 239. 
Gregariousness, instinct of, in man, 47-48, 50.

Hatred, punishment actuated by, 12-19;
  killings traceable to, 83. 
Heredity, view of man as the product of environment and, 34-36;
  relation of environment and, 37-40;
  problem of future, to adjust environment to, 41-43, 277-278;
  responsibility of, for the criminal, 57-65;
  child criminal as result of, 78-79;
  accounting for accused men’s actions by, 126-129;
  effects of, 201-202;
  laws of, not sufficiently known to justify sterilization, 237-238. 
Homicide, the crime of, 81-87.

Ignorance, disease due to, 252. 
Illinois, operation of parole law in, 267
Incest, crime of, 89-90. 
Indeterminate sentence, the, 268-271, 278. 
Industrialism and crime, 76, 203-212. 
Insane, restraint of, a measure of self-protection, 26;
  treatment of, 144;
  in prisons, 184-185;
  allowances for, in criminal codes, 187-190;
  legal tests of, not logical or humane, 190-192. 
Instinct, human action largely governed by, 44-54;
  stress placed on, as motive power of life, 81-83. 
Intelligence tests, use of, 185-186. 
Intolerance, a persisting source of evil, 228-229. 
Isolation of the subnormal, 233-249.