Archive image from page 153 of The descent of man, and. The descent of man, and selection in relation to sex descentofmansele187302darw Year: 1873 140 SEXUAL SELECTION: BIRDS. [Part II. spot (5), with its bright shading, there is a long, narrow, black mark (c), belonging to the same row, and which is arched a little downward so as to face (b). It is also narrowly edged on the lower side with a fulvous tint. To the left of and above c, in the same oblique direction, but

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