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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![that is, the same month two years later—the sex, as I have pointed out in the last chapter, being therefore the same, the ovulation month would again be September of 1898, and as September 1896 was a female ovulation, September 1897 would be a male, and September 1898 was the female ovulation which led to the birth of Princess Marie. Similarly, Princess Anastasia was boin in the same month, June, of 1901—i.e. two years after Princess Marie. Here again the ovulation month would be September of 1900; and as September 1898 was a female ovulation, September 1899 would be a male, and September 1900 a female; hence Princess Anastasia was born. The birth, then, of these three princesses successively after the first is thus easily accounted for. The long-wished-for heir, the Cesarewitch, was born in August 1904. Tracing back, we find that the ovulation month must have been November 1903. If, therefore, September 1900 was a female ovulation period, and pro- duced the Princess Anastasia, we know that September 1901 would be a male, September 1902 a female, and September 1903 a male ovulation period; therefore October 1903 would be a female ovulation, and November 1903 was a male ovulation, which being fertilised, the long-looked-for son and heir was duly born in August 1904, his birth being by this plan correctly foretold by me. The details of the family of the Queen of Spain are most interesting, and confirmatory also. 1. Boy, Prince of Asturias, born May 10, 1907. 2. Boy, Prince Jaime, born June 23, 1908. 3. Girl, Princess Beatrice, born June 22, 1909. 4. Boy, premature and stillborn, May 21, 1910. This child was expected in June 1910. (See note). 5. Girl, Princess Maria, born December 12, 1911. 6. Boy, Prince Juan, born June 20, 1913. 7. Boy, Prince Gonzale, born October 24, 1914. ] R n x J x X The Queen of Spain gave birth to a boy (Prince of Asturias) on May 10, 1907. Tracing back 280 days, or 40 weeks, we find the ovulation fertilised was in the first week of August 1906, and, being a male, gave rise on May 10, 1907, to the birth of a son, the Prince of Asturias.](https://iiif.wellcomecollection.org/image/b29821411_0234.jp2/full/800%2C/0/default.jpg)
