Transpiration of Silphium Laciniatum. L. A. Giddings 309 



Trees of Hawaii; Note 80 



Vegetation and Environment in California. W. A. Cannon 223 



Von Engeln, 0. D. Effect of Glaciation on Agriculture; Note 221 



Water Requirement of Plants. L. J. Briggs and H. L. Shantz; 



Review 76 



Weaver, J. E. Evaporation and Plant Succession in Washington. . 273 



