-^"^C"'^ 



Ta 



4s 



S//V/ 



Q I A 



O/y 



■^4 ^ 



4/^ 



^vo 



_/ N G 



^•r 





south'! 



^-A^O-TA 



NEBRASKA 



^H 



Upper So 





J'/ic ilutlid jiarts of the Sonoi (III Xoiiff cast 

 u/t/ii. (.rml riditi.i iiidicati Hit- v:c<fcni limit 

 of the hiiiiitd dhisiuns nt thn« /., 



LIFE ZONES 



BY C. HART MERRIAM 



