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So, also, the broad distinction between reproduction by seeds or ova and propagation by buds, though perfect in some of the lowest forms of life, becomes evanescent in others; and even the most absolute law we know in the physiology of genuine reproduction, that of sexual co-operation, has its exceptions in both kingdoms in parthenogenesis, to which in the vegetable kingdom a most curious series of gradations leads.
II, No. 1, pp. 53f. Goldschmidt, R. A Case of Facultative Parthenogenesis. Biol. Bulletin, 1917. Vol. XXXII, No. 1, p. 38. Goldschmidt, R. Intersexuality and the Endocrine Aspect of Sex. Endocrinology, Vol. I, p. 434. 1917. Fine summary of the work done on moths, birds and various forms by many biologists. Riddle, Dr Oscar.
And one of these clerical authors whom he had more recently read, actually had had the audacity to turn the weapons of the archenemy, science, back upon itself. The virgin birth was an established fact in nature, and had its place in the social economy of the bee. And did not parthenogenesis occur in the silk moth?
And one of these clerical authors whom he had more recently read, actually had had the audacity to turn the weapons of the archenemy, science, back upon itself. The virgin birth was an established fact in nature, and had its place in the social economy of the bee. And did not parthenogenesis occur in the silk moth?
As his head was whirling with an artist's sudden conception and, mark you, an artist's conception need no more be a case of parthenogenesis than that of the physical woman it had no room for the higher and subtler and more romantical idealizations of the owner of the kissed lips. You may put him down for an insensible young egoist. Put him down for what you will.
Even in human beings certain tumours of the sex-glands, known as teratomata, very rare in women and even rarer, if ever existent, in men, have been claimed as examples of attempts at parthenogenesis, and so far no better explanation is available. Now Loeb and others have succeeded in certain forms even in a vertebrate like the frog in inducing development in unimpregnated ova.
But as in a woman ante-pituitary and adrenal superiority make for masculinity, she must be classed as a masculinoid type of woman. She was socially aggressive, and took part in the revolutionary movement of her time in Ireland. Thus we find that Oscar Wilde was the result of a mating of internal secretions acting in the same direction. The process might be compared to parthenogenesis.
After moulting four times, the foundress produces, by parthenogenesis, a number of false eggs, which it fastens to the leaf-stalks and under side of the foliage.
I have had the skin of the caterpillar and this little heap of yellow Microgaster Cocoons sent me to examine, and have been seriously asked whether this was not a true case of Parthenogenesis; the suggestion being that the caterpillar had actually laid eggs, instead of waiting until it had become a moth, and that its efforts, to alter the course of nature, had been too much for its constitution and it had died in the act!
But I had to point out then that no case was known of "parthenogenesis" that is to say, reproduction by unfertilised eggs among the whole series of vertebrate animals, the fishes, amphibians, reptiles, birds, and mammals.
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