The book of nature : containing information for young people who think of getting married : on the philosophy of procreation and sexual intercourse, showing how to prevent conception and to avoid child-bearing : also, rules for management during labor and child-birth . 4- \ ^151 -. ^ 1. Zoosperme magnified. 2. Highly magnified. 3. Undeveloped Zoospermes in the Semen. 4. Female Ovum burst open for impregnation. 5. Zoospermes darting in to impregnate the Ovum. ZOOSPERMES. 11 fight very fiercely, and sometimes the fight lasts until onlyone or two out of a dozen or more are left alive, showinga pu
The book of nature : containing information for young people who think of getting married : on the philosophy of procreation and sexual intercourse, showing how to prevent conception and to avoid child-bearing : also, rules for management during labor and child-birth . 4- \ ^151 -. ^ 1. Zoosperme magnified. 2. Highly magnified. 3. Undeveloped Zoospermes in the Semen. 4. Female Ovum burst open for impregnation. 5. Zoospermes darting in to impregnate the Ovum. ZOOSPERMES. 11 fight very fiercely, and sometimes the fight lasts until onlyone or two out of a dozen or more are left alive, showinga pugnacity of disposition peculiar to mankind in the pri-mitive or half-civilized state. They will live for severalhours in warm water, and it is thus that their manoeuvresare more easily seen. The Semen of a boy, before puberty,contains no Zoospermes; and hence females of amorouspropensities have indulged with them without becomingimpregnated. Diseases of a certain character, and alsosome kinds of drugs, will destroy the vitality of the Semen. The animalculae of the Semen are not developed in theTestes. While there, it contains only the granules, whichripen as they proceed, and it is not until they reach theProstate Gland that they burst open. It is therefore neces-sary to a
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