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



PLATE IX. 



FlG. 1 . FlBROVASCULAR BUNDLES OF APRICOT. X 75. 



FlG. 2. FlBROVASCULAR BUNDLES OF GRAPE. X 75. 

 Photographs by Burton J. Howard. 



