248 DISEASES OF TROPICAL PLANTS CH.VH 



places. The most notable instance of this kind is 

 the so-called bastard logwood (Haematoxylon cam- 

 pechianum) of Jamaica. This peculiarity, for it cannot 

 properly be called a disease, has been studied by 

 Professor F. S. Earle, who came to the conclusion that 

 it was simply a variation from the ordinary or normal 

 type. 



