The causation of sex in man : a new theory of sex based on clinical materials together with chapters on forecasting or predicting the sex of the unborn child and on the determination or production of either sex at will / by E. Rumley Dawson.
- Dawson, E. Rumley (Ernest Rumley), -1918.
- Date:
- 1921
Licence: In copyright
Credit: The causation of sex in man : a new theory of sex based on clinical materials together with chapters on forecasting or predicting the sex of the unborn child and on the determination or production of either sex at will / by E. Rumley Dawson. Source: Wellcome Collection.
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![Mrs. L. R. had her children thus: 2. Ellei? j'Twins, December 17, 1897. 3. Alice, January 9, 1900. 4. Bertlia, April 13, 1901. The double ovulation by the one ovary (the left) has not affected the dates of the subsequent children. In these cases the right ovary has evidently supplied the two ova at one time, hence twin boys resulted. Mrs. T. H. B. had her family thus: 1. William, January 18, 1861. 2. Alice, January 2, 1862. James, October 12, 1864. Walter, June 9, 1866. George, April 19, 1868. Albert }Twms- April 21, 1870. Charles, June 23, 1872. 3- 4- 5- 6. 7- 8. All the birth dates come correctly, and the sex of the sixth confinement, but not the twinning, could have been rightly foretold, as the eighth child also would have been. Mrs. F. C. E. had her children thus: 1. Boy, September 30, 1908. *] 3’ Boy}Twins’ May On. - .4. Boy, January 18, 1913. R This is an interesting case where September 30 must rank as October; the birth date of the twin boys would then be right, and could have been correctly foretold, as would the fourth child from the date of the twins. In the following cases, an error in the month in which the child was expected to be born, led to my forecast being wrong. Had the month been correctly told me by the mother the prophecy would have been correct; thus: Mrs. W. H. had a girl born August 24, 1898. She ex- pected to be confined, she said, the third week of July 1903. I therefore foretold in April 15, 1903, that she would have a girl in July 1903; instead she was delivered of a fully](https://iiif.wellcomecollection.org/image/b29821411_0212.jp2/full/800%2C/0/default.jpg)
