Bui. 86, Bureau of Plant Industry, U. S. Dept. of Agriculture. 



Plate III. 



Fig. 1.— Near View of Sunken Palm Garden and Surrounding Dunes. 



Fig. 2.— Gradual Extension of a Palm Garden by Cutting Down Bordering 



Sand Hills. 



Fig. 3.— Vegetable Garden Irrigated by Well near Bottom of Basin in which 



Date Palms are Grown. 



