On the old clearings of another village Mr Bates himself, although he did not see a gorilla, saw the fresh tracks of these great apes and the torn stems and discarded fruit rinds of the "mejoms," as well as the broken stalks of the latter, which had been used for beds.
GRASP is the first internationally co-ordinated initiative to save the great apes.
Orang-utans are the only living great apes in Asia, but they could become extinct in the wild within just 20 years.
But the only European biomedical research that has used great apes recently is the Biomedical Primate Research Center at Rijswijk, in the Netherlands.
A good chunk of The Dynamic Dance is devoted to the behavior of wild and captive great apes.