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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

need only point out that, _on the whole_, the sexual activity rises 

steadily during the first nine months in the year to its maximum in 

September, and then sinks rapidly and abruptly during the next three to 

its minimum in December. 

 

The study of these curves suggests two interesting questions, to neither 

of which, however, do the data afford us an answer. 

 

In the first place, are the alterations, in my case, of the maximum of the 

discharges from March and June in the earlier years to September in the 

later, and the interpolation of a new secondary maximum in January, 

correlated with the increase in age; or is the discrepancy due simply to a 

temporary irregularity that would have been equally averaged out had I 

recorded the discharges of 1881-89 instead of those from 1887 to 1897? 

 

The second question is one of very great importance--socially, ethically, 

and physically. How often, in this climate, should a man have sexual 

connection with his wife in order to maintain himself in perfect 

physiological equilibrium? My results enable us to state definitely the 

minimum limits, and to reply that 37 embraces annually would be too few; 

but, unfortunately, they give us no clue to the maximum limit. It is 

obvious that the necessary frequency should be greater than 37 times 

annually,--possibly very considerably in excess thereof,--seeing that the 

spontaneous discharges, with which we are dealing, are due to 

over-pressure, and occur only when the system, being denied natural 

relief, can no longer retain its secretions; and, therefore, it seems very 

reasonable to suggest that the frequency of natural relief should be some 

multiple of 37. I do not perceive, however, that the data in hand afford 

us any clue to this multiple, or enable us to suggest either 2, 3, 4, or 5 

as the required multiple of 37. It is true that other observations upon 

myself have afforded me what I believe to be a fairly satisfactory and 

reliable answer so far as concerns myself; but these observations are of 

such a nature that they cannot be discussed here, and I have no 

inclination to offer as a counsel to others an opinion which I am unable 

to justify by the citation of facts and statistics. Moreover, I am quite 

unable to opine whether, given 37 as the annual frequency of spontaneous 

discharges in a number of men, the multiple required for the frequency of 

natural relief should be the same in every case. For aught I know to the 

contrary, the physiological idiosyncrasies of men may be so varied that, 

given two men with an annual frequency of 37 spontaneous discharges, the 

desired multiple may be in one case X and in the other 2X.[378] Our data, 

however, do clearly denote that the frequency in the six or eight summer 

months should bear to the frequency of the six or four winter months the 

proportion of three or four to two.[379] It should never be forgotten, 

however, that, under all conditions, both man and wife should exercise 

prudence, both _selfward_ and _otherward_, and that each should utterly 

refuse to gratify self by accepting a sacrifice, however willingly 

offered, that may be gravely prejudicial to the health of the other; for 

only experience can show whether, in any union, the receptivity of the 

woman be greater or less than, or equal to, the _physical_ desire of the 

man. To those, of course, who regard marriage from the old-fashioned and 

grossly immoral standpoint of Melancthon and other theologians, and who 


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