B'j!. 66. Bureau of Chemis-'ry. U. S. Dept. Agr 



Plate IX. 



V, 'r^>--^^ 



«*■ 



Fig. 1 .—Fibrovascular Bundles of Apricot. ' 75. 



Fig. 2.— Fibrovascular Bundles of Grape. 



Photographs !)>■ Burioii .1. H<>\var«l. 



