 It has long been known that in the vertebrate kingdom one sex bears rudiments of various accessory parts, appertaining to the reproductive system, which properly belong to the opposite sex ; and it has now been ascertained that at a very early embryonic...  The Medical Age - Page 561886Full view - About this book
 | Charles Darwin - 1871 - 432 pages
...the reproductive system, which properly belong to the opposite sex ; and it has now been ascertained that at a very early embryonic period both sexes possess true male and female glands. Hence some extremely remote progenitor of the whole vertebrate kingdom appears to have been hermaphrodite... | |
 | Charles Darwin - Evolution - 1871 - 468 pages
...the reproductive system, which properly belong to the opposite sex; and it has now been ascertained that at a very early embryonic period both sexes possess true male and female glands. Hence some extremely remote progenitor of the whole vertebrate kingdom appears to have been hermaphrodite... | |
 | George Briggs Starkweather - Diagnostic sex determination - 1883 - 318 pages
...traceable even in classic times in Greece. And, curiously enough, it is now believed to be ascertained that at a very early embryonic period both sexes possess true male and female glands; hence, say Darwin and others, some extremely remote progenitor of the whole vertebrate kingdom must... | |
 | Veterinary medicine - 1883 - 358 pages
...primitively little to do with the sexual function ; " and Darwin remarks, " It has now been ascertained that, at a very early embryonic period, both sexes possess true male and female glands." Before generative ducts arise, the generative products escape from the bodies of the lowest creatures... | |
 | Medicine - 1835 - 800 pages
...sexual organs distinct in two different individuals, but a condition closely resembling hermaphroditism often occurs by reversion as an anomaly; and should...hermaphrodite, there remains the facts "that at a very early embryotic period both sexes possess true male and female glands" (Darwin), and in each mature individual... | |
 | William Roger Williams - Sex factors in disease - 1885 - 56 pages
...the reproductive system, which properly belong to the opposite sex ; and it has now been ascertained that at a very early embryonic period both sexes possess true male and female glands.' — DARWIN. IN ORDER rightly to understand the significance of sex, we must first of all realise the highly important... | |
 | Eliza Burt Gamble - History - 1894 - 402 pages
...of this kingdom must have been hermaphrodite, or androgynous, especially as it has been ascertained that at a very early embryonic period both sexes possess true male and female glands. As high in the scale of life as the mammalian class, males are said to possess rudiments of a uterus,... | |
 | 1905 - 462 pages
...the reproductive system, which properly belong to the opposite sex ; and it has now been ascertained that at a very early embryonic period both sexes possess true male and female glands. Hence some remote progenitor of the whole vertebrate kingdom appears to have been hermaphrodite or... | |
 | Francis H. Buzzacott - Bisexuality - 1914 - 206 pages
...reproductive system, which are supposed to belong only to the opposite sex ; and it has now been ascertained that at a very early embryonic period both sexes possess true male and female glands, hence some remote progenitor appears to have been Hermaphrodite or Androgynous [ie, Bisexual Man]."... | |
 | Francis H. Buzzacott - Sex - 1914 - 204 pages
...reproductive system, which are supposed to belong only to the opposite sex; and it has now been ascertained that at a very early embryonic period both sexes possess true male and female glands, hence some remote progenitor appears to have been Hermaphrodite or Androgynous [ie, Bisexual Man]."—Darwin,... | |
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