. The descent of man : and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings. 330 THE DESCENT OP' MAN. *'iii a dying ;® Mr. Buist informs me, that in June, 1868, the keeper of the Stormontfield breeding-ponds visited the north- ern Tyne and found about 300 dead salmon, all of which with one exception were males; and he was convinced that they had lost their lives by Fig". 28. Head of female salmon. The most curious point about the male sahr^on is that during the breeding-season, besides a slight change in color, "the lower "
. The descent of man : and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings. 330 THE DESCENT OP' MAN. *'iii a dying ;® Mr. Buist informs me, that in June, 1868, the keeper of the Stormontfield breeding-ponds visited the north- ern Tyne and found about 300 dead salmon, all of which with one exception were males; and he was convinced that they had lost their lives by Fig". 28. Head of female salmon. The most curious point about the male sahr^on is that during the breeding-season, besides a slight change in color, "the lower "jaw elongates, and a cartilaginous projection turns upwards "from the point, which, when the jaws are closed, occupies a "deep cavity between the intermaxillary bones of the upper ;^ (Figs. 27 and 28.) In our salmon this change of structure lasts « 'The Field,' June 29th, 1867. For Mr. Shaw's statement, see 'Edin- burgti Review,' 1843. Another experienced observer (Scrope's 'Days of Salmon Fisihing-,' p. 60) remarks that like the stag, the male would,'if he could, keep all other males away. "^ Yarrell, 'History of British Fishes,' vol. ii. 1836, p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Darwin, Charles, 1809-1882. New York : Merrill and Baker
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Keywords: ., bookcentury1800, bookdecade1870, booksubjecthumanbeings, bookyear
