Bui. 820, U. S. Dept. of Agriculture. 



PLATE XV. 



Fig. I. — Five-Year-Old Jack Pine Plantation to Right of Fire Line, 

 AND 9 TO 1 1 Year Old Yellow Pine Plantation to the Left of 

 Fire Line, in the Dismal River Division of the Nebraska National 

 Forest. 



Jack pine survived and grow on more severe exposures where Scotch, Norway, and western yellow 

 pines, Douglas fir, and arborvitse failed. 



Fig. 2. — Fifteen-Year-Old Plantation in Holt County, Where Real 

 Forest Conditions Have Become Established. 



PLANTATIONS OF JACK PINE IN THE SAND HILLS OF NEBRASKA. 



