44 A Study of the Vegetation of 
have been published elsewhere (16, 17), it seems well worth while 
considering them in a brief manner at this time. 
Two stations were maintained in these prairies throughout the 
pray lt yune | ft vey | tT Adour | SEPT 
Ee DEES GS) ee GE EE De) Se) (SO ee a FS 
Fic. 11. Evaporation rates on a southwest slope (solid lines) and a 
northeast slope in the Festuca consociation during 1913 (heavy lines) and 
1914. The dotted graph gives the evaporation rates on the southwest slope 
and at a height of 50 centimeters during I914. 
44 
