CONTENTS. 



Nomadism, or the Wandering Impulse, with Special Reference 



to Heredity. 



PAG8 



I. Scope of the subject-matter and nomenclature 7 



II. Classification of nomadism 8 



III. The wandering instinct 9 



1. The wandering instinct in anthropoid apes 9 



2. The wandering instinct among primitive peoples 10 



3. The wandering instinct in children 12 



4. Wandering in adolescents 12 



IV. The family history of nomads: Importance, sources, and classification 12 



V. Tables showing distribution of the nomadic tendency in the 100 family histories 



(tables 1 to 8) 14 



VI. Inheritance of the nomadic tendency 20 



1 . Hypothesis 20 



2. Test of the hypothesis (table 9) 21 



VII. Nomadic occupations 24 



VIII. Association of the nomadic impulse with psychoses 24 



IX. Summary 26 



X. Literature cited 26 



Appendix — Abstracts of 100 family histories of nomads 27 



Inheritance of Temperament with Special Reference to 



Twins and Suicides. 



I. Introduction 71 



II. Definition 71 



1 . The hyperkinetic state 71 



2. The hypokinetic (depressed) state 73 



3. The alternation of hyperkinesis and hypokinesis 73 



4. "Normal" mood 74 



5. General facts of heredity 75 



III. Hypothesis as to heredity 75 



IV. Test of the hypothesis 75 



1 . Method 75 



2. Results 81 



3. Discussion of table C; the apparently unconformable cases 88 



4. The behavior of the choleric-cheerful 93 



5 . Conclusion 94 



V. Discussion of earlier studies on heredity of temperament 95 



VI. Evidence for inheritance of temperament drawn from studies of identical twins. 100 



VII. Selection of temperaments in marriage 106 



VIII. Suicide in relation to temperament 108 



1 . Introduction 108 



2. Suicides in hyperkinetics 109 



3. Suicides in hypokinetics 113 



4. The inheritance of these two types of suicides 114 



IX. The specificity of the suicidal impulse 116 



X. Remarks on the categories of functional insanity 118 



XI. The hyperkinetics and the hypokinetics in the population — the romantic and 



the classic types 119 



XII. Summary 1 -' 1 



XIII. Literature cited I »3 



3 



