Liitz, F. E. Work of; Note 133 



Lyon, T. L. and Bizzt'll, J. A. Higher Plants and Nitrate Forma- 

 tion ; Review 27 



Matheny, AN'. A. Identity of Brown Rot; Review 29 



McDougall, W. B. MycoVhizas; Review 195 



Moon, F. F. and Brown, N. C. Elements of Forestry; Review. . . 364 

 IMutative Effects of Environment. A. F. Blakeslee, Blochwitz; 



Review 219 



IMyc'orhizas. W. B. McDougall; Review 195 



New Zealand Journal of Agriculture; Note 246 



Nitrate Determination. C. B. Lipman and L. T. Sharp; Review. . . 78 

 Nitrogen Transformation, Relation of Antagonism to. C. B, Lip- 

 man 295 



Nova Scotia Forests. B. E. Fernow; Review 54 



Parish, S. B. Sketches of the Colorado Desert 122 



Pearson, G. A. Role of Aspen in Reforestation 249 



Permanent Wilting in Plants. Shive, J. W. and Livingston, B. E. 81 



Physiological Anatomy. G. Haberlandt; Re\iew 268 



Phytogeographical Notes on Arkansas. R. M. Harper 36 



Phuis radiata in New Zealand; Note 246 



Piper, C. V. and Beattie, R. K. Flora of Washington and Idaho; 



Review 220 



Pool, R. J. Sandhills of Nebraska; Review 219 



Praeger, R. L. Buoyancy of Seeds; Review 131 



Praeger, R. L. Weeds; Note 197 



Rainfall as a Determinant of Soil Moisture. F. Shreve 9 



Red Pigment of Tomatoes. B. M. Duggar; Review 132 



Reversibility of Water Reaction in a Liverwort. W. A. Cannon. . 261 



Rigg, G. B. Flora of Alaskan Bogs 167 



Role of Aspen in Reforestation. G. A. Pearson 249 



Rosendahl, C. O. Forcing Native Plants in Winter 354 



Rumbold, C. Evaporation in Lancaster County, Pennsylvania. . . 213 



Sand Dunes of Coos Bay, Oregon. H. D. House 238 



Sandhills of Nebraska. R. J. Pool; Review 219 



Seasonal Life Cycle of Red Algae. I. F. Lewis 31 



Shantz, H. L. Work in Tooele Valley; Note 197 



Shaw, H. B. Improved Cog Psychrometer 183 



Shive, J. W. Freezing Points of Nutrient Solutions 345 



Shive, J. W. and Livingston, B. E. Permanent Wilting in Plants. 81 



Shreve, F. Rainfall as a Determinant of Soil Moisture 9 



Shull, G. H. Longevity of Submerged Seed 329 



Sketches of the Colorado Desert. S. B. Parish 122 



Spoehr, H. A. Acidity in Cacti; Review 194 



Stevens, F. L. Fungi Which Cause Plant Disease; Review 192 



Sweetser, A. R. Ferns of Oregon; Review 164 



Sykes, G. Agriculture in the Nile Valley 69 



Teratology in Passiflora. J. A. Harris and R. A. Gortner 199 



Thermotropism in Roots. H. D. Hooker, Jr 135 



Transpiration as Affected by Surface Films. B. M. Duggar and J. 



S. Cooley ; Review 244 



5 



