The Microscopic Anatomy of the Human Body in Health And Disease volume 1
The Microscopic Anatomy of the Human Body in Health And Disease volume 1
Arthur Hill Hassall
The book The Microscopic Anatomy of the Human Body in Health And Disease volume 1 was written by author Arthur Hill Hassall Here you can read free online of The Microscopic Anatomy of the Human Body in Health And Disease volume 1 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Microscopic Anatomy of the Human Body in Health And Disease volume 1 a good or bad book?
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The number also of the spermatozoa contained in the seminal fluid varies in different individuals, and is usually in * Elements, pp. 28. And 29, THE SEMEN. 199 proportion to the activity of the reproductive function, and this again is dependent to a great extent upon the constitu- tional powers as well as upon the mode of life. The activity then of the reproductive faculty in man is in many cases a good test of health. The above few facts favour the idea of the essentiality of the spermatozoa ;... others however, of a stronger kind, still remain to be mentioned. Wagner has instituted some most interesting inquiries in reference to the condition of the spermatozoa in male hybrids, and especially in male hybrid birds, and he finds, that in them the characteristic animalcules are either al- together wanting, or occur but in small numbers, and are ill- foraied and ill-conditioned ; the hybrids in which the seminal animalcules have been thus found to be absent or degenerated, have been ascertained to be incapable of having offspring.
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