it, . M -^ < i 



F — 231079 



Fir.URE 12.— Black spruce grntinng on poor site in Minnesota. Such stands will not produce 3 cords of pulpiuood per acre at 



100 years of age and are classified noncommercial. 



F — 243073 



Fi(;URF. M.—Old-growilt nm Ihci n liardwood forest of sugar maple, yellow birch . and bassivood in the U pper Peninsula of Mil Jiigan. 



Three overmature, decudoit trees appear in foreground. 



Forest Resources of the iMke Slates Region 



11 



