Bui. 192, Bureau of Plant Industry, U. S. Dept. of Agiiculture. 



Plate IV. 



Fig. 1 .—Characteristic Burl at the Base of an Olive Tree on the Pope Plan- 

 tation, NEAR Palm Springs, Cal. 



■«^*'; i. j^ 





Fig. 2.— Feeding Rootlets, from 6 Inches in Depth, on the Pope Olive Plan- 

 tation. 'Natural Size.) 



