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Table of contents
PREFACE
EROTIC SYMBOLISM-1.1
EROTIC SYMBOLISM-1.2
EROTIC SYMBOLISM-2.1
EROTIC SYMBOLISM-2.2
EROTIC SYMBOLISM-2.3
EROTIC SYMBOLISM-2.4
EROTIC SYMBOLISM-2.5
EROTIC SYMBOLISM-3.1
EROTIC SYMBOLISM-3.2
EROTIC SYMBOLISM-3.3
EROTIC SYMBOLISM-3.4
EROTIC SYMBOLISM-3.5
EROTIC SYMBOLISM-4.1
EROTIC SYMBOLISM-4.2
EROTIC SYMBOLISM-4.3
EROTIC SYMBOLISM-5.1
EROTIC SYMBOLISM-5.2
EROTIC SYMBOLISM-5.3
EROTIC SYMBOLISM-6
THE MECHANISM OF DETUMESCENCE-1.1
THE MECHANISM OF DETUMESCENCE-1.2
THE MECHANISM OF DETUMESCENCE-1.3
THE MECHANISM OF DETUMESCENCE-1.4
THE MECHANISM OF DETUMESCENCE-2.1
THE MECHANISM OF DETUMESCENCE-2.2
THE MECHANISM OF DETUMESCENCE-2.3
THE MECHANISM OF DETUMESCENCE-2.4
THE MECHANISM OF DETUMESCENCE-3.1
THE MECHANISM OF DETUMESCENCE-3.2
THE MECHANISM OF DETUMESCENCE-4.1
THE MECHANISM OF DETUMESCENCE-4.2
THE MECHANISM OF DETUMESCENCE-4.3
THE PSYCHIC STATE IN PREGNANCY-1
THE PSYCHIC STATE IN PREGNANCY-2
THE PSYCHIC STATE IN PREGNANCY-3
THE PSYCHIC STATE IN PREGNANCY-4
HISTORIES OF SEXUAL DEVELOPMENT HISTORY-1.1
HISTORIES OF SEXUAL DEVELOPMENT HISTORY-1.2
HISTORIES OF SEXUAL DEVELOPMENT HISTORY-2.1
HISTORIES OF SEXUAL DEVELOPMENT HISTORY-2.2
HISTORIES OF SEXUAL DEVELOPMENT HISTORY-3-4
HISTORIES OF SEXUAL DEVELOPMENT HISTORY-5.1
HISTORIES OF SEXUAL DEVELOPMENT HISTORY-5.2
INDEX OF AUTHORS

who is watching over the infant she is suckling at her breast. I 

have observed precisely the same expression in the face of a boy 

of 14 with a large congenital scrotal hernia; when the tumor was 

being examined his lower lip became retracted, well marked lines 

appearing from the angles downwards, though the upper lip 

retained its normal expression It was precisely the tender look 

we may see in the faces of mothers who are watching anxiously 

over their offspring, and the emotion is evidently the same in 

both cases: solicitude for a sensitive and tenderly guarded 

object. 

 

The degree of pigmentation is clearly correlated with sexual vigor. "In 

general," Heusinger laid down, in 1823, "the quantity of pigment is 

proportional to the functional effectiveness of the genital organs." This 

connection is so profound that it may be traced very widely throughout the 

organic world. 

 

The connection between pigmentation and sexual activity is very ancient. 

Even leaving out of account the wedding apparel of animals, nearly always 

gorgeous in scales and plumage and hair, the sexual orifice shows a more 

or less marked tendency to pigmentation during the breeding season from 

fishes upward, while in mammals the darker pigmentation of this region is 

a constant phenomenon in sexually mature individuals.[159] 

 

In the human species both the negative standard of castration and the 

positive standard of puberty alike indicate a correlation of this kind. 

Those individuals in whom puberty never fully develops and who are 

consequently said to be affected by infantilism, reveal a relative absence 

of pigment in the sexual centers which are normally pigmented to a high 

degree.[160] Among those Asiatic races who extirpate the ovaries in young 

girls the skin remains white in the perineum, round the anus, and in the 

armpits.[161] Even in mature women who undergo ovariotomy, as Kepler 

found, the pigmentation of the nipples and areola disappears, as well as 

of the perineum and anus, the skin taking on a remarkable whiteness. 

 

Normally the sexual centers, and in a high degree the genital orifice, 

represent the maximum of pigmentation, and under some circumstances this 

is clearly visible even in infancy. Thus babies of mixed black and white 

blood may show no traces of negro ancestry at birth, but there will always 

be increased pigmentation about the external genitalia.[162] The linea 

fusca, which reaches from the pubes to the navel and occasionally to the 

ensiform cartilage, is a line of sexual pigmentation sometimes regarded as 

characteristic of pregnancy, but as Andersen, of Copenhagen, has found by 

the examination of several hundred children of both sexes, it exists in a 

slight form in about 75 per cent. of young girls, and in almost as large a 

proportion of boys. But there is no doubt that it tends to increase with 

age as well as to become marked at pregnancy. At puberty there is a 

general tendency to changes in pigmentation; thus Godin found that in 28 

per cent, adolescent changes occurred in the eyes and hair at this period, 

the hair becoming darker, though the eyes sometimes become lighter. Ammon, 

in his investigation of conscripts at the age of 20 (_post_, p. 196), 


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