Chap. V] TROPICAL DISTRICTS WITH DRY SEASONS 357 



The woodland of the coast of East Africa is mainly xerophilous, and 

 assumes the form sometimes of savannah-forest, at other times of thorn- 

 forest and thorn-bush, naturally with several transitional forms. The less 

 extensive tracts of tall-stemmed forest (Figs. 191 and 192) may possibly 

 be classified as monsoon-forest, in harmony with the sharp division of the 



Fig. 191. Part of a forest in the coast region of German East Africa. From a photograph. 



year into rainy and dry seasons, but accurate accounts are wanting, as are 

 also data regarding the condition of the foliage at different seasons of the 

 year. 



' No type of formation,' says Engler, ' is so richly developed in Africa as that 

 of the "bush-woodland."' According to his account, this formation belongs to 

 what I have designated thorn-forest, with shrubs frequently predominating, and 



