Bul. 820, U. S. Dept. of Agriculture. PLATE X. 
F-31792 
Fic. |.—OVERMATURE JACK PINE ORIGINALLY GROWN IN DENSE STAND, BUT 
NOW OPEN THROUGH NATURAL THINNING, AND JACK PINE REPRODUCTION 
COMING UP UNDERNEATH. CROW WING COUNTY, MINN. 
F—69122 
FIG. 2.—REPRODUCTION OF JACK PINE AFTER CLEARING AND FIRES ON 
AN ABANDONED FARM IN THE JACK PLAINS REGION, MICHIGAN. 
