On Morphology And Teleology Especially in the Limbs of Mammalia
On Morphology And Teleology Especially in the Limbs of Mammalia
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In the adult state, however, this tube is always more or less enlarged and convoluted, to afford a reservoir of the size, and an absorbent surface of the extent required by the nature of the food consumed; but all such modifications are purely teleological, and only conform to the general arrangement which assigns to the organs of nutrition a region below that in which are the organs of the motive forces, and above that devoted to generation.
There is at first but a single anterior and posterio...r opening, but the former is generally, and the latter in mammalia afterward, divided into a superior and an inferior opening ; the nasal and oral, the anal and genital orifices, by transverse bands which bear the names of upper lip and perinaaum.
With one exception, all sexual diversity is teleological, that is, resulting from a difference in the size or shape of parts which exist alike in both sexes. The exception is in the case of the ovary and the testis, which, being entirely distinct in every respect, constitute the only morphological difference between the two sexes ; a true hermaphroditism is, of course, impossible, except between the two sides of the body; and this would be a positive condi- tion, while all the so-called cases of hermaphroditism are merely negative and doubtful states.
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To quickly assess the difficulty of the text, read a short excerpt:
In the adult state, however, this tube is always more or less enlarged and convoluted, to afford a reservoir of the size, and an absorbent surface of the extent required by the nature of the food consumed; but all such modifications are purely teleological, and only conform to the general arrangement which assigns to the organs of nutrition a region below that in which are the organs of the motive forces, and above that devoted to generation.
There is at first but a single anterior and posterio...r opening, but the former is generally, and the latter in mammalia afterward, divided into a superior and an inferior opening ; the nasal and oral, the anal and genital orifices, by transverse bands which bear the names of upper lip and perinaaum.
With one exception, all sexual diversity is teleological, that is, resulting from a difference in the size or shape of parts which exist alike in both sexes. The exception is in the case of the ovary and the testis, which, being entirely distinct in every respect, constitute the only morphological difference between the two sexes ; a true hermaphroditism is, of course, impossible, except between the two sides of the body; and this would be a positive condi- tion, while all the so-called cases of hermaphroditism are merely negative and doubtful states.
What to read after On Morphology And Teleology Especially in the Limbs of Mammalia?
You can find similar books in the "Read Also" column, or choose other free books by Burt G Burt Green Wilder to read onlineMoreLess
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