Geol. Mag. 1922. 



Plate VII. 



Fig, 1. — Mangrove Swamp being covered again by sand within the upUfted area of Pemba Bay. 



Fig. 2.— Raised beach at Pemba Bay. The cliff is the fault-line marked B on the Sketch-map, 

 and is composed cliiefly of mud with a thin sandstone cap. 



[To face p. 200. 



