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 by its intense blackness, the red reflection of other Chimpanzees not being visible; also by the bald head, whence of course the name. The nostrils of this Ape, as of Johanna, were somewhat expanded, and thus present a certain likeness to the Gorilla. But there can be no suggestion that A. calvus is the product of a union between the two African Anthropoids. As is the case with Johanna, Sally was given and enjoyed animal food on occasions. It is a curious fact that both Sally and Johanna appear to have been colour-blind.



The Orang Utan, genus Simia, has but one definable species, viz. S. satyrus. The supposed species of Owen, S. morio, cannot be satisfactorily defined. Plenty of other specific names have also been given to what is in all probability but a single species of large Anthropoid Ape inhabiting the islands of Borneo and Sumatra.