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129. King, F. H. Investigations in soil management. U. S. Dept. Agr., Bur. of 



Soils, Bull. 26, 1905. 

 129a. Livingston, B. E., Beitton, J. C, and Reid, F. R. Studies on the prop- 

 erties of an unproductive soil. U. S. Dept. Agr., Bur. of Soils, 

 Bull. 28, 1905. 



130. Review of Hans Fittings' Die Wasserversorgnung und die Osmo- 



tischen Druckverhaltnisse der wustenpflanzen. Plant World, 14, 7, 

 1911. 



131. McCool, M. M., and Millar, C. E. The water content of the soil and the 



composition and concentration of the soil solution as indicated by 

 the freezing-point lowerings of the roots and tops of plants. Soil 

 Science, vol. 3, No. 2, 1917. 



132. McLaughlin, W. W. Capillary movement of soil moisture. U. S. Dept. 



Agr., Bull. 835, 1920. Contribution from Bur. Public Roads. 



133. Moore, Barrington. Osmotic pressure as an index of habitat. Jour. 



Forestry, XV, 8, Dec, 1917. 



134. Nernst, W. Theoretical chemistry. 7th German edition. London, 1916. 



135. Osboen, H. F. The origin and evolution of life. New York, 1918. 



136. Patten, H. E., and Gallagher, F. E. Absorption of vapors and gases by 



soils. U. S. Dept. Agr., Bur. of Soils, Bull. 51, 1908. 



137. Schull, H. A. Measurement of the surface forces in soils. Bot. Gaz., vol. 



52, pp. 1-31, 1916. 



138. Schreiner, O., and Skinner, J. J. Nitrogenous soil constituents and their 

 j bearing on soil fertility. U. S. Dept. Agr., Bur. Soils, Bull. 87, 



1912. 



139. Shreve, Forrest. Rainfall as a determinant of soil moisture. Plant 



World, vol. 17, No. 1, 1914. 



140. Soils, Bureau of. Soil survey field book. U. S. Dept. Agr., 1906. 



141. Wherry, E. T. Soil acidity and a field method for its measurement. 



Ecology, I, 3, 1920. 



142. Whitney, M. D. Methods of the mechanical analysis of soils and of the 



determination of the amount of moisture in soils in the field. . U. 

 S. Dept. Agr., Bur. of Soils, Bull. 4, 1896. 



WIND movement. 



145. Bates, C. G. The r61e of light in natural and artificial reforestation. 



Jour. Forestry, XV, 2, 1917. 



146. Humphreys, W. J. Wind velocity and elevation. U. S. Weather Bur., 



Mo. Weather Rev., XLIV, 1, p. 14-17, Jan., 1916. 



147. Marvin, C. F. Anemometer tests. U. S. Weather Bur., Mo. Weather Rev., 



XXVIII, 2, p. 58-63, Feb., 1900. 



148. Sandstrom, J. W. Working up wind observations. U. S. Weather Bur., 



Mo. Weather Rev., XLIII, 11, p. 547-556, Nov., 1915. 



149. U. S. Weather Bureau. Instructions for. the installation and mainte- 



nance of wind measuring and recording apparatus. (Circ. D, In- 

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150. Weidman, R. H. The windfall problem in the Klamath region, Oregon. 



Jour. Forestry, XVIII, 8, 1920. 



EVAPORATION. . 



151. Bates, C. G. A new evaporimeter for use in forest studies. U. S. 



Weather Bur., Mo. Weather Rev., May, 1919. 



152. Bigelow, F. H. A manual for observers in climatology and evaporation. 



U. S. Dept. Agr., Weather Bull. No 409, 106 p., 1909. 



