Main  Contacts  
Table of contents
PREFACE
INTRODUCTION
REPRODUCTION-1
REPRODUCTION-2
REPRODUCTION-3
ANATOMY OF THE REPRODUCTIVE ORGANS-1
ANATOMY OF THE REPRODUCTIVE ORGANS-2
ANATOMY OF THE REPRODUCTIVE ORGANS-3
ANATOMY OF THE REPRODUCTIVE ORGANS-4
THE SEXUAL RELATIONS-1
THE SEXUAL RELATIONS-2
THE SEXUAL RELATIONS-3
THE SEXUAL RELATIONS-4
THE SEXUAL RELATIONS-15
CHASTITY-1
CHASTITY-2
CHASTITY-3
CONTINENCE
MARITAL EXCESSES-1
MARITAL EXCESSES-2
MARITAL EXCESSES-3
PREVENTION OF CONCEPTION:ITS EVILS AND DANGERS-1
PREVENTION OF CONCEPTION:ITS EVILS AND DANGERS-2
INFANTICIDE AND ABORTION
THE SOCIAL EVIL-1
THE SOCIAL EVIL-2
THE SOCIAL EVIL-3
SOLITARY VICE-1
SOLITARY VICE-2
RESULTS OF SECRET VICE-1
RESULTS OF SECRET VICE-2
EFFECTS IN FEMALES
CURATIVE TREATMENT OF THE EFFECTS OF SELF-ABUSE-1
CURATIVE TREATMENT OF THE EFFECTS OF SELF-ABUSE-2
CURATIVE TREATMENT OF THE EFFECTS OF SELF-ABUSE-3
A CHAPTER FOR BOYS-1
A CHAPTER FOR BOYS-2
A CHAPTER FOR BOYS-3
A CHAPTER FOR BOYS-4
A CHAPTER FOR GIRLS-1
A CHAPTER FOR GIRLS-2
A CHAPTER FOR GIRLS-3
INDEX

closed in a short time; but occasionally it remains open, giving rise 

to congenital hernia, an accident in which a loop of intestine follows 

the testicle down into the scrotum, either completely or partially. 

In a few animals, as in the porcupine, the opening is never fully closed, 

and the testis remains in the cavity of the body most of the time, 

passing out only at certain periods. We also occasionally meet cases 

of human beings in which the testes have never descended from their 

place in the abdominal cavity, giving the individuals the appearance 

of eunuchs. This condition, however, though an abnormal one, does not 

in any way interfere with the function of the organs, as those who happen 

to possess it often imagine. We have also met with cases in which the 

organs were movable, and could readily be pressed up into the abdominal 

cavity, through the unclosed inguinal cavity, which afforded them a 

passage downward in the process of development. 

 

As before remarked, these peculiarities do not affect the functions 

of the organs in any appreciable degree, although they not infrequently 

give rise to some apprehension on the part of those subject to them. 

The left testicle is sometimes a little smaller than the right, another 

fact which is seized upon by quacks as a means of exciting the fears 

of young men who have been addicted to bad habits, although the 

peculiarity is generally without important significance. 

 

The testicles are connected with the urinary passage by means of two 

ducts which terminate near the base of the bladder, at which point they 

connect with the urethra. We need not dwell at further length upon the 

structure of the testicles, as this subject receives fuller attention 

elsewhere. 

 

Human spermatozoa are about 1/600 of an inch in length. Those of 

reptiles are very much larger. One of the remarkable features of these 

minute elements is their peculiar movements. While alive, the 

filamentous tail is in constant action in a manner strongly resembling 

the movements of the caudal appendage of a tadpole. This wonderful 

property led the earlier observers to believe that they were true 

animalcula. But they are not to be regarded as such, though one can 

scarcely make himself believe otherwise while watching their lively 

evolutions, and apparent volitionary movement from one point to 

another. 

 

Spermatozoa originate in the testis as cells, which are filled with 

granules. After a time, each granule acquires a long appendage, and 

then the cell has become converted into a bundle of small zoosperms. 

Development still continues, until finally the thin pellicle on the 

outside of the bundle is ruptured, thus liberating the young 

spermatozoa, which speedily complete their full development. The 

spermatozoon is pure protoplasm, which is the basis of all life, and 

its power of spontaneous motion is due to this fact. 

 

In man, the formation of spermatozoa continues with greater or less 

rapidity from puberty to old age, though at the two extremes of 

existence they are imperfectly developed. When not discharged from the 


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