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GENERAL PREFACE
THE EVOLUTION OF MODESTY-1.1
THE EVOLUTION OF MODESTY-1.2
THE EVOLUTION OF MODESTY-1.3
THE EVOLUTION OF MODESTY-1.4
THE EVOLUTION OF MODESTY-1.5
THE EVOLUTION OF MODESTY-1.6
THE EVOLUTION OF MODESTY-2.1
THE EVOLUTION OF MODESTY-2.2
THE EVOLUTION OF MODESTY-2.3
THE EVOLUTION OF MODESTY-2.4
THE EVOLUTION OF MODESTY-2.5
THE EVOLUTION OF MODESTY-3
THE EVOLUTION OF MODESTY-4
THE PHENOMENA OF SEXUAL PERIODICITY-1.1
THE PHENOMENA OF SEXUAL PERIODICITY-1.2
FOOTNOTES
THE PHENOMENA OF SEXUAL PERIODICITY-2.1
THE PHENOMENA OF SEXUAL PERIODICITY-2.2
THE PHENOMENA OF SEXUAL PERIODICITY-2.3
THE PHENOMENA OF SEXUAL PERIODICITY-3.1
THE PHENOMENA OF SEXUAL PERIODICITY-3.2
THE PHENOMENA OF SEXUAL PERIODICITY-3.3
THE PHENOMENA OF SEXUAL PERIODICITY-3.4
THE PHENOMENA OF SEXUAL PERIODICITY-3.5
FOOTNOTES
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-1.1
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-1.2
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-1.3
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-1.4
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-1.5
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-1.6
FOOTNOTES
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-2.1
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-2.2
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-2.3
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-2.4
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-3.1
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-3.2
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-3.3
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-3.4
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-3.5
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-3.6
AUTO-EROTISM: A STUDY OF THE SPONTANEOUS MANIFESTATIONS OF THE SEXUAL IMPULSE-3.7
FOOTNOTES
APPENDIX A-1.1
APPENDIX A-1.2
APPENDIX B-1.1
APPENDIX B-1.2
APPENDIX C-1.1
APPENDIX C-1.2
INDEX OF AUTHORS

Wappaeus, solely to social causes. Villerme reached somewhat similar 

results. Founding his study on 17,000,000 births, he showed that in France 

it was in April, May, and June, or from the spring equinox to the summer 

solstice, and nearer to the solstice than the equinox, that the maximum of 

fecundations takes place; while the minimum of births is normally in July, 

but is retarded by a wet and cold summer in such a manner that in August 

there are scarcely more births than in July, and, on the other hand, a 

very hot summer, accelerating the minimum of births, causes it to fall in 

June instead of in July.[152] He also showed that in Buenos Ayres, where 

the seasons are reversed, the conception-rate follows the reversed 

seasons, and is also raised by epochs of repose, of plentiful food, and of 

increased social life. Sormani studied the periodicity of conception in 

Italy, and found that the spring maximum in the southern provinces occurs 

in May, and gradually falls later as one proceeds northward, until, in the 

extreme north of the peninsula, it occurs in July. In southern Italy there 

is only one maximum and one minimum; in the north there are two. The 

minimum which follows the spring or summer maximum increases as we 

approach the south, while the minimum associated with the winter cold 

increases as we approach the north.[153] Beukemann, who studied the matter 

in various parts of Germany, found that seasonal influence was specially 

marked in the case of illegitimate births. The maximum of conceptions of 

illegitimate children takes place in the spring and summer of Europe 

generally; in Russia it takes place in the autumn and winter, when the 

harvest-working months for the population are over, and the period of 

rest, and also of minimum deathrate (September, October, and November), 

comes round. In Russia the general conception-rate has been studied by 

various investigators. Here the maximum number of conceptions is in 

winter, the minimum varying among different elements of the population. 

Looked at more closely, there are maxima of conceptions in Russia in 

January and in April. (In Russian towns, however, the maximum number of 

conceptions occurs in the autumn.) The special characteristics of the 

Russian conception-rate are held to be due to the prevalence of marriages 

in autumn and winter,[154] to the severely observed fasts of spring, and 

to the exhausting harvest-work of summer. 


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