Bui. 523, U. S. Dept. of Agriculture. 



Plate VI. 





F-SWDS 



Fig. 1. — "Water ash (F, caroliniana). 



F-9WDS 



Fig. 2. — Blue ash (F. quadrangulata). 



^^^**B»«^M 



1 



t -^ 



^^^^^ ^bmBIH^^^m S^v. -i-r^g^HmKftuj,^^**^°*> 



Fig. 3.— Black ash ( F. nigra). 



Transverse Sections of Ash Wood, Magnified 50 Diameters. 



