xviii SYLVICULTURE IN THE TROPICS 



the factors which govern the proper development of 

 tree growth. 



It will therefore be convenient to divide this volume 

 into the following parts : 



Part I. Factors governing and influencing the exist- 

 ence of forests ; 

 Part II. Formation and regeneration of woodland 

 crops ; 

 Part III. Training and improvement of forests ; and 

 Part IV. Special measures of maintenance and pro- 

 tection. 



The factors influencing the distribution of forests 

 are the "Soil/' the "Climate," the "Locality." and 

 "Plant and animal allies and enemies." As "Man 

 and domestic animals " are of sufficient importance to 

 be considered separately, they will be dealt with in a 

 special chapter. I have also added a chapter on the 

 " Influence of forests on climate and locality." 



