vi SYLVICULTURE IN THE TROPICS 



how often I have had to turn to them for guidance, but 

 even these are not sufficient for me to express fully 

 what I owe to them. 



For the chapter on soils I am much indebted to Dr. 

 E. J. Russell's article on "The Soil and the Plant" in 

 the last July number of Science Progress, and to 

 a pamphlet on "Soils" by Dr. J. Nisbet which was 

 appended to the Indian Forester some years ago. 



With the exception of one photograph (viz. " Climbers 

 in a riverside forest, Blue Nile "), which was taken 

 by Mr. S. A. Wood of the Sudan Forest Depart- 

 ment, all the others were taken either by my wife or 

 by myself. 



A. F. BROUN 



WOODHOUSE, CHUDLEIGH, 



S. Devon, 22nd January 1912. 



