. The descent of man, and selection in relation to sex. Evolution (Biology); Sexual selection in animals; Sexual dimorphism (Animals); Sex differences; Human beings. 4 SEXUAL SELECTION. [Pakt II. 27.) In our salmon this change of structure lasts only during the breeding-season; but in the Salmo lycaodon of Northwestern America the change, as Mr J. K. Lord 7. Fig. 26.—Head of male of common salmon (Salmo salar) during the breeding- season. [This drawing, as well aa all the others in the present chapter, have been ex- ecuted by the well-known artist, Mr. Q. Ford, under the kind superintendence o
. The descent of man, and selection in relation to sex. Evolution (Biology); Sexual selection in animals; Sexual dimorphism (Animals); Sex differences; Human beings. 4 SEXUAL SELECTION. [Pakt II. 27.) In our salmon this change of structure lasts only during the breeding-season; but in the Salmo lycaodon of Northwestern America the change, as Mr J. K. Lord 7. Fig. 26.—Head of male of common salmon (Salmo salar) during the breeding- season. [This drawing, as well aa all the others in the present chapter, have been ex- ecuted by the well-known artist, Mr. Q. Ford, under the kind superintendence of Dr. Gunther, from specimens in the British Museum]. 7 'The Naturalist in Vancouver's Island,' vol. i. 1866, 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: D. Appleton and Company
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