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 



FIG. ii. 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 1914. 



44 



