-I40 



THE DESICCATION OF AFRICA. 



and one from the centre southwards; these I have called the 

 PROTO-Niger, the PROTO-Congo and the ProtO-Nile for the 

 northern tract, and the ProtO-ORANGE for the southern. The 

 remedy for this distressing state of affairs is the revival of the 

 great inland sources of supply for the rainfall of the interior, 

 the re-flooding of Lakes Chad and Ngami. While the scheme 

 for Lake Chad involves too much expense for it to be advocated 

 at the present time, the case of Lake Ngami is quite different. 

 The rivers supplying Lake Ngami are actually now being 

 stolen by the head-streams of the coastal rivers, and a quite 

 moderate weir across the Cunene River would turn the whole 



Fig. I. — Map of Africa. 

 tSiiowiNG THE Original C'orR,SF:s of the Prixoipal Uivers. 



