Chap. VI] EDAPHIC INFLUENCES IN THE TROPICS 383 



extremely important. By the infiltration of water from rivers and lakes, 

 conditions for forest growth are secured in grassland districts, and 



Fig. 207. Exterior of a bamboo-wood. Left hand : A reca Catechu. Java. From a photograph. 



tropophilous or xerophilous deciduous forest is transformed into hygro- 

 philous evergreen forest. Stagnant water occasions still more fundamental 



