Bul. 11, Div. of Foresiry, U. S. Depi. of Agriculture 
PLATE {. 
45 525 SNA) Sacas 
A.—CROSS SECTION OF WILD TREE. 
a, mother bark layer. 
b, wild cork. 
B.—CROSS SECTION OF DECORTICATED TREE. 
a, mother bark layer. 
b, commercial cork. 
C.—HATCHET USED IN DECORTICATING. 
