Map No. 10. 
Bul. 460, U. S. Dept. of Agriculture 
was 
/ 
Wf 
iS fs 
ie ay, 
/ 
a 
4 
4 
/ 
aN y 
5, I 
\, 7 
0 Vea 5 
° 
wo 
© 
= 
a 
wines 
\ 
\ 
GEOGRAPHIC DISTRIBUTION. 
PINUS PONDEROSA: 
