Bui. 



Div. of Fores;iy, U. S. Dept. o* Agi'culture 



Plate I. 



a 



A. Cross Section of Wild Tree. 



a, mother bark layer. 



/*, wild cork. 

 B.— Cross Section of Decorticated Tree. 



a, mother bark layer. 



b, commercial cork. 



C. -Hatchet Used in Decorticating. 



