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Campbell, J., on the Indian elephant; on the proportion of male and female births in the harems of Siam. Campylopterus hemileucurus. Canaries distinguishing persons. Canary, polygamy of the; change of plumage in, after moulting; female, selecting the best singing male; sterile hybrid, singing of a; female, singing of the; selecting a greenfinch; and siskin, pairing of. Cancer pagurus.