Special hygienic and medical information for parents . points is notwell understood. It is supposed by some thatthe semen is not thoroughly elaborated, and thatthe sperms are not completely evolved, until thedifferent secretions we have spoken of are inti-mately commingled. There are two theories extant in regard tothe time that the semen is secreted. The onethat is generally indorsed is that the testes areconstantly secreting semen. In men who havebeen continent less semen is secreted than inthose that are married. The condition of themind and the surroundings greatly influence theamount. The
Special hygienic and medical information for parents . points is notwell understood. It is supposed by some thatthe semen is not thoroughly elaborated, and thatthe sperms are not completely evolved, until thedifferent secretions we have spoken of are inti-mately commingled. There are two theories extant in regard tothe time that the semen is secreted. The onethat is generally indorsed is that the testes areconstantly secreting semen. In men who havebeen continent less semen is secreted than inthose that are married. The condition of themind and the surroundings greatly influence theamount. The vesiculse seminales are not only secretoryin their nature, but, it is claimed, they act as so 52 PHENOMENA OF HEALTH. many reservoirs for the semen that does notpass off by seminal emissions. Without dwelling any longer at present onthe crenerative organs and their functions, wewill in the next chapter consider the process ofimpregnation. Many interesting facts pertain-ing to generation will be presented when weconsider the diseases of these I CHAPTER IV CONCEPTION AND ITS PECULIARITIES. T is admitted by all physiologists that con-ception is the result of contact of the spermof the male and the germ or ovum of the sexual intercourse the semen is brought indirect contact with the mouth of the womb. Thespermatozoon enters the uterine canal, and wher-ever it meets the egg that is trying to escapeinto the external world, there impregnation takesplace. EXPLODED THEORIES. The old doctrine was, that there is a seminalaura, or atmosphere, that passes to the ovary,and that the egg is always fertilized before itleaves its parent bed. There have been varioustheories advanced in regard to who is entitled tothe most credit in producing the new being, thefather or the mother. Pythagoras and Aristotletaught that the female parent furnishes the mate-rial for the formation of the offspring, and thatthe male qtcickens it to life. Galen, on the otherhand, taught that the male
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjecthumanreproduction
