01 
' 
ANGELIC IE 
Revised November 1958 
UNIV. 
DOCUM 
OF FL LIB. 
ENTS DEPT. 
#-»i •» 
r\n*r\ 
U.S. DEPOSITORY 
No. 17S7 
FOREST PRODUCTS LABORATORY 
MADISON S.WISCONSIN 
UNITED STATES DEPARTMENT OF AGRICULTURE 
FOREST SERVICE 
In Cooperation with the University of Wisconsin 
