Relative Transpiration of White Pine Seedlings. G. P. Burns. ... 1 



Rest Period. C. O. Appleman; Review 151 



Root Systems of Prairie Plants of Washington. J. E. Weaver 227, 273 



Salton Sea. D. T. MacDougal, et ah; Reviews 14, 16 



Shive, J. W. Improved Non-Absorbing Porous Cup Atmometer ... 7 

 Shreve, E. B. Investigation of Causes of Autonomic Movements 



in Succulent Plants 297, 331 



Shreve, F. Montane Rain-Forest; Review 168 



Skinner, J. J. Antizymotic Action of a Harmful Soil Constituent . 162 



Skinner, J. J. Effect of Vanillin as a Soil Constituent 321 



Skottsberg, C. Relation between Floras of Subantarctic America 



and New Zealand 129 



Smith A. M. Limiting Factors and Plant Growth; Review 201 



Standley, P. C. Vegetation of Brazos Canon, New Mexico 179 



Stewart, A. Origin of the Galapagos Islands 192 



Stomps, T. J. Dunes of Lake Michigan 205 



Symposiums on Plant Geography; Note 225, 294 



Taylor, W. W. Chemistry of Colloids; Review 344 



Text-Book of Biology. G. N. Calkins; Review 89 



Text-Book of Grasses. A. S. Hitchcock; Review 257 



Transpiring Power of Leaves. A. L. Bakke; Review 222 



Trent Forest Survey. C. D. Howe and J. H. White; Review 174 



Tropical Silviculture. A. F. Broun; Review 19 



Useful Drawing Camera. R. M. Holman 313 



Vegetation of Brazos Canon, New Mexico. P. C. Standley 179 



Vegetation of Florida. J. W. Harshberger; R. M. Harper; Review . 220 



Vegetation of Katmai Region; Note 153 



Weaver, J. E. Root Systems of Prairie Plants of Washington . 227, 273 

 Western Wild Flowers, M. Armstrong; Review 293 



