14/82 A tree much like the mango abounds, but it does not yield fruit. In these rivers a kind of edible muscle is plentiful, the shells of which exist in all the alluvial beds of the ancient rivers as far as the Kuruman. The brackish nature of the water probably enables it to exist here. On the open grassy lawns great numbers of a species of lark are seen. They are black, with yellow shoulders. |