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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

temperament is of a decidedly nervous and emotional type. 

 

Before proceeding to remark upon the various rhythms that I have 

discovered, I will tabulate the data on which my conclusions are founded. 

The numbers of discharges recorded in the years in question are as 

follows:-- 

 

In 1886, 30. (Records commenced in April.) 

In 1887, 40. 

In 1888, 37. 

In 1889, 18. (Pretty certainly not fully recorded.) 

In 1890, 0 (No records kept this year.[377]) 

In 1891, 19. (Records recommenced in June.) 

In 1892, 35. 

In 1893, 40. 

In 1894, 38. 

In 1895, 36. 

In 1896, 36. 

In 1897, 35. 

Average, 37. (Omitting 1886, 1889, and 1891.) 

 

Thus I have complete records for eight years, and incomplete records for 

three more; and the remarkable concord between the respective annual 

numbers of observations in these eight years not only affords us intrinsic 

evidence of the accuracy of my records, but, also, at once proves that 

there is an undeniable regularity in the occurrence of these sexual 

discharges, and, therefore, gives us reason for expecting to find this 

regularity rhythmical. Moreover, since it seemed reasonable to expect 

that there might be more than one rhythm, I have examined my data with a 

view to discovering (1) an annual, (2) a lunar-monthly, and (3) a weekly 

rhythm, and I now proceed to show that all three such rhythms exist. 

 

 

 

 

THE ANNUAL RHYTHM. 

 

It is obvious that, in searching for an annual rhythm, we must ignore the 

records of the three incomplete years; but those of the remaining eight 

are graphically depicted upon Chart 8. The curves speak so plainly for 

themselves that any comment were almost superfluous, and the concord 

between the various curves, although, of course, not perfect, is far 

greater than the scantiness of the data would have justified us in 

expecting. The curves all agree in pointing to the existence of three 

well-defined maxima,--viz., in March, June, and September,--these being, 

therefore, the months in which the sexual instinct is most active; and the 

later curves show that there is also often a fourth maximum in January. In 

the earlier years the March and June maxima are more strikingly marked 

than the September one; but the uppermost curve shows that on the average 

of all eight years the September maximum is the highest, the June and 

January maxima occupying the second place, and the March maximum being the 

least strongly marked of all. 

 

Now, remembering that, in calculating the curves of the annual rhythm of 

the pulse, I had found it necessary to average two months' records 

together, in order to bring out the full significance of the rhythm, I 

thought it well to try the effect upon these curves also of similarly 

averaging two months together. At first my results were fairly 

satisfactory; but, as my data increased year by year, I found that these 

curves were contradicting one another, and therefore concluded that I had 

selected unnatural periods for my averaging. My first attempted remedy was 

to arrange the months in the pairs December-January, February-March, etc., 

instead of in January-February, March-April, etc.; but with these pairs I 

fared no better than with the former. I then arranged the months in the 

triplets, January-February-March, etc.; and the results are graphically 

recorded on Chart 7. Here, again, comment would be quite futile, but I 


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