Ch.VI] COLD TEMPERATE WOODLAND AND GRASSLAND 545 



MEAN RAINFALL IN THE UNITED STATES IN MILLIMETERS. 

 (After Hann, I, Bd. Ill, p. 288.) 



WINDS IN THE NORTH AMERICAN FOREST DISTRICT. 

 (After Woeikof, Bd. II, p. 35.) 



N n 



