Gregory, J.W. <br/><br/>
The rift valleys and geology of East Africa  an account of the origin & history of the rift valleys of East Africa & their relation to the contemporary earth-movements which transformed the geography of the world. with some account of the prehistoric stone implements, soils, water supply, & mineral resources of the Kenya colony 
 with appendices on the edible earths, soils, fossils, rocks,, & Masai place-names 

 - 479 p.  ill., maps