Stories told him by the hunters of the nomadic tribes in the forests of Borneo which he visited. These hunters are ordered by the village chiefs to kill the rhinos, which they hunt with razor-sharp lances as thick as a man's arm. They get very little reward. The horn is given to the chief in return for a little rice and the skin to the trader in return for some cloth, tobacco, salt, or petrol.
Pfeffer belives that the rhinos have been completely exterminated in the south-east, that is in the Barito valley, the most populous part of the island. There were still a few, June 1957, in the east of Borneo, and he thinks that some probably remain in the western hinterland and south-west of the island which he did not visit.