. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings -- Origin. 343 The Descent of Man. Part II. Amphibians. Urodela.—I will begin with the tailed amphibians. The sexes of salamanders or newts often differ much both in colour and structure. In some species prehensile claws are developed on the fore-legs of the males during the breeding-season: and at this season in the male Triton palmipes the hind-feet are pro- vided with a swimming-web, which is almost completely absorbed during the winter; so that their feet then resemble. Please note
. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings -- Origin. 343 The Descent of Man. Part II. Amphibians. Urodela.—I will begin with the tailed amphibians. The sexes of salamanders or newts often differ much both in colour and structure. In some species prehensile claws are developed on the fore-legs of the males during the breeding-season: and at this season in the male Triton palmipes the hind-feet are pro- vided with a swimming-web, which is almost completely absorbed during the winter; so that their feet then resemble. 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, Appleton
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