Semen

Definition and stakes

William Harvey,  The Works of William Harvey M.D

“ Some will have it that the semen or the blood is the matter whence the chick is engendered; others, that the semen is the agent or efficient cause of its formation. Yet to him who dispassionately views the question is it quite certain that there is no prepared matter present, nor any menstruous blood to be coagulated at the time of intercourse by the semen masculinum, as Aristotle will have it; neither does the chick originate in the egg from the seed of the male, nor from that of the female, nor from the two commingled. ”
Source: Gutenberg

Herbert Lester Gilman,  A study of some factors influencing fertility and sterility in the bull (1922)

“ The testes, epididymes, vesicles, prostate, and other parts, each contribute their essential part to the semen, abnormalities of any one of which, as a rule, result in interferences with reproduction. If the vesicles are involved, we must bear in mind just what is the part played by their secretion, and what is the probable result if their essential elements are not added to the semen. In like manner, we must consider the prostate, whose secretion stimulates the vitality of the sperms, and adds fluid bulk to the semen. ”
Source: Gutenberg

Portrait of Charles Knowlton Charles Knowlton,  Fruits of Philosophy: A Treatise on the Population Question

“ Conception.—The part performed by the male in the reproduction of the species consists in exciting the organism of the female, and depositing the semen in the vagina. Before I inquire what takes place in the females I propose to speak of the semen.
This fluid, which is secreted by the testicles, may be said to possess three kinds of properties, physical, chemical, physiological. Its physical properties are known to every one—it is a thickish, nearly opaque fluid, of a peculiar odor, saltish taste, etc.
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Source: Gutenberg

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