Plate XVI 



Fig-. 28. Diagram siiowing- tlie comparative evaporation rates at the 

 different statioas on the basis of the maximum average amount per day 

 between July 5 and October 18, 1913. 



Pig 29. Graphs showing the range of soil moisture in the narrow ravine, Sta- 

 tion 2, at depths of 7.5 cm. (a) and 15 cm. (b). Broken lines show the wilting coef- 

 ficients for ihe soil at depths of 7.5 cm. (c) and 15 cm (d). 



