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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

there is another tendency for minor climaxes in spring and 

autumn. Thus, in Italy, Penta, taking the statistics of nearly 

four thousand crimes (murder, highway robbery, and sexual 

offences), found the maximum in the first summer months, but 

there were also minor climaxes in spring and in August and 

September (Penta, _Rivista Mensile di Psichiatria_, 1899). In 

nearly all Europe (as is shown by a diagram given by Lombroso and 

Laschi, at the end of the first volume of _Le Crime Politique_), 

while the chief climaxes occur about July, there is, in most 

countries, a distinct tendency to spring (usually about March) 

and autumn (September and November) climaxes, though they rarely 

rise as high as the July climax. 

If we consider the separate periodicity of sexual offences, we 

find that they follow the rule for crimes generally, and usually 

show a chief maximum in early summer. Aschaffenburg finds that 

the annual periodicity of the sexual impulse appears more 

strongly marked the more abnormal its manifestations, which he 

places in the following order of increasing periodicity: 

conceptions in marriage, conceptions out of marriage, offences 

against decency, rape, assaults on children (_Centralblatt fuer 

Nervenheilkunde_, January, 1903). In France, rapes and offences 

against modesty are most numerous in May, June, and July, as 

Villerme, Lacassagne, and others have shown. Villerme, 

investigating 1,000 such cases, found a gradual ascent in 

frequency (only slightly broken in March) to a maximum in June 

(oscillating between May and July, when the years are considered 

separately), and then a gradual descent to a minimum in December. 

Legludic gives, for the 159 cases he had investigated, a table 

showing a small February-March climax, and a large June-August 

maximum, the minimum being reached in November-January. 

(Legludic, _Attentats aux Moeurs_, 1896, p. 16.) In Germany, 

Aschaffenburg finds that sexual offences begin to increase in 

March and April, reach a maximum in June or July, and fall to a 

minimum in winter (_Monatsschrift fuer Psychiatrie_, 1903, Heft 

2). In Italy, Penta shows that sexual offences reach a minor 

climax in May (corresponding, in his experience, with the maximum 

for crimes generally, as well as with the maximum for 

conceptions), and a more marked climax in August-September 

(Penta, _I Pervertimenti Sessuali_, 1893, p. 115; id. _Rivista 

Mensile di Psichiatria_, 1899). 

 

 

Corre, in his _Crime en Pays Creole_, presents charts of the 

seasonal distribution of crime in Guadeloupe, with relation to 

temperature, which show that while, in a mild temperature like 

that of France and England, crime attains its maximum in the hot 

season, it is not so in a more tropical climate; in July, when in 

Guadeloupe the heat attains its maximum degree, crime of all 

kinds falls suddenly to a very low minimum. Even in the United 

States, where the summer heat is often excessive, it tends to 

produce a diminution of crime. 

 

Dexter, in an elaborate study of the relationship of conduct to 

the weather, shows that in the United States assaults present the 

maximum of frequency in April and October, with a decrease during 

the summer and the winter. "The unusual and interesting fact 

demonstrated here with a certainty that cannot be doubted is," he 


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