Contents. vii 



CHAPTER VIII. 

 HEREDITY AND NATIONAL CHARACTER. 



PAGE 



I. Permanence of the Character of Nations ... ... ... 107 



IL Jews, Gypsies, Cagots ... ... ... ... ... Ill 



CHAPTER IX. 



MORBID PSYCHOLOGICAL HEREDITY. 



L Insanity is always produced by Organic Causes ... ... 1 19 



II. Heredity of Hallucination, Suicide, Homicidal Monomania, 



Demoniacal Possession, Hypochondria, Presentiments ... 122 



III. Heredity of Mania, Dementia, General Paralysis. Statistics ... 124 



PART SECOND. 

 THE LAWS. 



CHAPTER I. 

 ARE THERE LAWS OF HEREDITY? 



I. Facts and Laws ... ... ... ... ... ... 135 



II. Objections against Psychological Heredity : Buckle and 



Maupertuis ... ... ... ... ... ... 137 



III. Heredity is the Law, Non-heredity the Exception ... ... 143 



CHAPTER II. 

 THE LAWS OF HEREDITY. 



I. Four Principal Forms of Heredity ... ... ... ... 145 



Section I. Direct Heredity. Influence of Parents : Doctrines 

 on this Subject Hybridism. Instances of Heredity from 

 Mother to Son, Father to Daughter, Father to Son, Mother 

 to Daughter ... ... ... ... ... ... 148 



Section 2. Atavism ... ... ... ... ... 166 



Section 3. Indirect or Collateral Heredity ... ... 170 



Section 4. Heredity of Influence. Heredity compared with 

 Alternate Generation ... ... ... ... ... 174 



