Bui. 66 Bureau of Chemistry, U. S. Dept. Agr. 



Plate VI. 



'"^J 



Quince. 





4^ 



~^-X 



> 



^^^"- Apricot. 



Fig. 1.— Fruit fibrovascular Bundles, x 2. 



I 



\« 





^v 



'& 



N; 





UX 



Fig. 2.— Fibrovascular Bundles of Apple. 



I'liotoi^raphs by Burton .1. Howard. 



