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Table of contents
THE CONQUEST OF THE VENEREAL DISEASES-8.1
THE CONQUEST OF THE VENEREAL DISEASES-8.2
THE CONQUEST OF THE VENEREAL DISEASES-8.3
THE CONQUEST OF THE VENEREAL DISEASES-8.4
THE CONQUEST OF THE VENEREAL DISEASES-8.5
THE CONQUEST OF THE VENEREAL DISEASES-8.6
FOOTNOTES
SEXUAL MORALITY-9.1
SEXUAL MORALITY-9.2
SEXUAL MORALITY-9.3
SEXUAL MORALITY-9.4
SEXUAL MORALITY-9.5
SEXUAL MORALITY-9.6
SEXUAL MORALITY-9.7
SEXUAL MORALITY-9.8
SEXUAL MORALITY-9.9
MARRIAGE-10.1
MARRIAGE-10.2
MARRIAGE-10.3
MARRIAGE-10.4
MARRIAGE-10.5
MARRIAGE-10.6
MARRIAGE-10.7
MARRIAGE-10.8
MARRIAGE-10.9
MARRIAGE-10.10
MARRIAGE-10.11
MARRIAGE-10.12
FOOTNOTES
THE ART OF LOVE-11.1
THE ART OF LOVE-11.2
THE ART OF LOVE-11.3
THE ART OF LOVE-11.4
THE ART OF LOVE-11.5
THE ART OF LOVE-11.6
THE ART OF LOVE-11.7
THE ART OF LOVE-11.8
THE ART OF LOVE-11.9
THE ART OF LOVE-11.10
THE ART OF LOVE-11.11
FOOTNOTES
THE SCIENCE OF PROCREATION-12.1
THE SCIENCE OF PROCREATION-12.2
THE SCIENCE OF PROCREATION-12.3
THE SCIENCE OF PROCREATION-12.4
THE SCIENCE OF PROCREATION-12.5
THE SCIENCE OF PROCREATION-12.6
THE SCIENCE OF PROCREATION-12.7
THE SCIENCE OF PROCREATION-12.8
THE SCIENCE OF PROCREATION-12.9
FOOTNOTES
INDEX OF AUTHORS

indiscriminate endowment of procreation. 

 

[461] On the scientific side, in addition to the fruitful methods of 

statistical biometrics, which have already been mentioned, much promise 

attaches to work along the lines initiated by Mendel; see W. Bateson, 

_Mendel's Principles of Heredity_, 1909; also, W.H. Lock, _Recent Progress 

in the Study of Variation, Heredity, and Evolution_, and R.C. Punnett, 

_Mendelism_, 1907 (American edition, with interesting preface by Gaylord 

Wilshire, from the Socialistic point of view, 1909). 

 

[462] The study of the right conditions for procreation is very ancient. 

In modern times we find that even the very first French medical book in 

the vulgar tongue, the _Regime du Corps_, written by Alebrand of Florence 

(who was physician to the King of France), in 1256, is largely devoted to 

this matter, concerning which it gives much sound advice. See J.B. 

Soalhat, _Les Idees de Maistre Alebrand de Florence sur la Puericulture_, 

These de Paris, 1908. 

 

[463] Hesiod, _Works and Days_, II, 690-700. 

 

[464] This has long been the accepted opinion of medical authorities, as 

may be judged by the statements brought together two centuries ago by 

Schurig, _Parthenologia_, pp. 22-25. 

 

[465] The statement that, on the average, the best age for procreation in 

men is before, rather than after, forty, by no means assumes the existence 

of any "critical" age in men analogous to the menopause in women. This is 

sometimes asserted, but there is no agreement in regard to it. Restif de 

la Bretonne (_Monsieur Nicolas_, vol. x, p. 176) said that at the age of 

forty delicacy of sentiment begins to go. Fuerbringer believes (Senator and 

Kaminer, _Health and Disease in Relation to Marriage_, vol. i, p. 222) 

that there is a decisive turn in a man's life in the sixth decade, or the 

middle of the fifth, when desire and potency diminish. J.F. Sutherland 

also states (_Comptes-rendus Congres International de Medecine_, 1900, 

Section de Psychiatrie, p. 471) that there is, in men, about the 

fifty-fifth year, a change analogous to the menopause in women, but only 

in a certain proportion of men. It would appear that in most men the 

decline of sexual feeling and potency is very gradual, and at first 

manifests itself in increased power of control. 

 

[466] See, in vol. i, the study of "The Phenomena of Sexual Periodicity." 

 

[467] Among animals, also, spring litters are often said to be the best. 

 

[468] Bossi's results are summarized in _Archives d'Anthropologie 

Criminelle_, Sept., 1891. Alebrand of Florence, the French King's 

physician in the thirteenth century, also advised intercourse a day after 

the end of menstruation. 

 

POSTSCRIPT. 

 

 

"The work that I was born to do is done," a great poet wrote when at last 

he had completed his task. And although I am not entitled to sing any 

_Nunc dimittis_, I am well aware that the task that has occupied the best 

part of my life can have left few years and little strength for any work 

that comes after. It is more than thirty years ago since the first resolve 

to write the work now here concluded began to shape itself, still dimly 

though insistently; the period of study and preparation occupied over 

fifteen years, ending with the publication of _Man and Woman_, put forward 

as a prolegomenon to the main work which, in the writing and publication, 

has occupied the fifteen subsequent years. 

 

It was perhaps fortunate for my peace that I failed at the outset to 

foresee all the perils that beset my path. I knew indeed that those who 

investigate severely and intimately any subject which men are accustomed 

to pass by on the other side lay themselves open to misunderstanding and 


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