112 



Rev. S. S. Doniaii — Geology of Basutoland. 



In estuaries the influence of tributary streams can be seen in 

 operation. They divert the low-water channels and, therefore, the 

 deep-water line. This is strikingly illustrated in the Exe, to be 

 discussed in a future paper. 



SfAUrETt 



BtOOELSI^Eir^. 



H£IT£:REN. 



Fig. 2. — Deviation of a river towards a trihutarj- ; ou the opposite side, streams 

 formerly continuous with the network above. 



YI. — Notes on the Geology of Basutoland. 



By the Eev. S. S. Dounan. 



[Cunchided from the February JSfumher, page 63.) 



OF all the animals of the Stormberg Beds the Thcriodonts are the 

 most interesting, as they bear strong resemblances to mammals. 

 Dr. Broom, of Stellenbosch, says they have practically solved the 

 problem of the origin of mammals. Of these Theriodonts only two are 

 said to have come from Basutoland, both of small size, viz. Galesaurus 

 and Tritylodon. They are only known from their skulls. I have not 



