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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

II. 

 

The Question of a Monthly Sexual Cycle in Men--The Earliest Suggestions of 

a General Physiological Cycle in Men--Periodicity in Disease--Insanity, 

Heart Disease, etc.--The Alleged Twenty-three Days' Cycle--The 

Physiological Periodicity of Seminal Emissions during Sleep--Original 

Observations--Fortnightly and Weekly Rhythms. 

 

 

For some centuries, at least, inquisitive observers here and there have 

thought they found reason to believe that men, as well as women, present 

various signs of a menstrual physiological cycle. It would be possible to 

collect a number of opinions in favor of such a monthly physiological 

periodicity in men. Precise evidence, however, is, for the most part, 

lacking. Men have expended infinite ingenuity in establishing the remote 

rhythms of the solar system and the periodicity of comets. They have 

disdained to trouble about the simpler task of proving or disproving the 

cycles of their own organisms.[117] It is over half a century since 

Laycock wrote that "the _scientific_ observation and treatment of disease 

are impossible without a knowledge of the mysterious revolutions 

continually taking place in the system"; yet the task of summarizing the 

whole of our knowledge regarding these "mysterious revolutions" is even 

to-day no heavy one. As to the existence of a monthly cycle in the sexual 

instincts of men, with a single exception, I am not aware that any attempt 

has been made to bring forward definite evidence.[118] A certain interest 

and novelty attaches, therefore, to the evidence I am able to produce, 

although that evidence will not suffice to settle the question finally. 

 

The great Italian physician, Sanctorius, who was in so many ways the 

precursor of our modern methods of physiological research by the means of 

instruments of precision, was the first, so far as I am aware, to suggest 

a monthly cycle of the organism in men. He had carefully studied the 

weight of the body with reference to the amount of excretions, and 

believed that a monthly increase in weight to the amount of one or two 

pounds occurred in men, followed by a critical discharge of urine, this 

crisis being preceded by feelings of heaviness and lassitude.[119] Gall, 

another great initiator of modern views, likewise asserted a monthly cycle 

in men. He insisted that there is a monthly critical period, more marked 

in nervous people than in others, and that at this time the complexion 

becomes dull, the breath stronger, digestion more laborious, while there 

is sometimes disturbance of the urine, together with general _malaise_, in 

which the temper takes part; ideas are formed with more difficulty, and 

there is a tendency to melancholy, with unusual irascibility and mental 

inertia, lasting a few days. More recently Stephenson, who established the 

cyclical wave-theory of menstruation, argued that it exists in men also, 

and is really "a general law of vital energy."[120] 

 

Sanctorius does not appear to have published the data on which 

his belief was founded. Keill, an English, follower of 

Sanctorius, in his _Medicina Statica Britannica_ (1718), 

published a series of daily (morning and evening) body-weights 

for the year, without referring to the question of a monthly 

cycle. A period of maximum weight is shown usually, by Keill's 

figures, to occur about once a month, but it is generally 

irregular, and cannot usually be shown to occur at definite 

intervals. Monthly discharges of blood from the sexual organs and 


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