Word: spermatozoa
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Dates: during 1920-1929
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...Steinach theory recognizes that the testes create spermatozoa (the male sexual cells, which keep up the endless cycle of life). At the same time, the theory supposes** that the testes form an internal secretion. This secretion pours into the blood stream by way of the veins leading from the ductless (in this case also ducted) glands, carries with it hormones, messengers. In the male these are male hormones, in the female "female sex" hormones, "ovarian" hormones, and so on according to the causation view held by the research reporter. These hormones influence the secondary sex characteristics-body build, hair distribution...
...according to the theory, if the energy of the glands is deflected from the manufacture of spermatozoa then there remains energy to produce hormones in magnificent quantity. In the male the gland can be blocked off and the escape of the spermatozoa prevented very easily-a slight incision, scarcely more than a scratch, into the conveniently accessible scrotum, a tying off of the two-foot long vas deferens of one or both of the testes, and the job is done. Thus reproduction potentiality is mechanically stopped in half or in full. Sexual continence, of course, gives approximately the same beneficial...
...results of preventing the emission of spermatozoa, of leaving to the testes the duty of producing only the male sex hormones, have been extremely satisfying, as in the case of Dr. Lorenz. The Steinach operation is performed, however, on young men-the potential fathers, heads of families-with great reluctance. In some cases-from sexual excesses, from overwork, from disease-spermatozoa production has fallen off or ceased entirely. In "older" men, usually in those who have reached their sixties, similar falling off or cessation occurs. For such the operation is beneficial. They will pep up, with all the connotations this...
...Columbia, rests on strictly objective data. They say there is a special chromosome (chromosomes are minute bodies of constant number and appearance for each species of plant or animal which appear in the cells during cell-division) called the X-or accessory chromosome, which is found in half the spermatozoa of male animals. This is present in addition to the regular number of chromosomes, which always occur in pairs (48 in man), thus giving rise to an uneven number. Ova, on the other hand, in variably have two X-chromosomes. Eggs fertilized by spermatozoa con taining the X-element (thus...