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85. Church, J. E. Jr. The conservation of snow; its dependence on mountains and 



forests. Bull, of the University of Nev., Agr. Exp. Station, vol. 1 

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86. . The progress of Mount Rose Observatory, 1906-1912. Science, n. s., 



Vol. XXXVI, No. 939, December, 1912. 



87. . The Mount Rose weather observatory. 1906-1907. Bull. No. 67. 



University of Nev. Agr. Exp. Station. 



88. . Snow survey provides basis for close forecast of watersheds' yield. 



Engineering Record, April 17, 1915. 



89. Hortox, R. E. Rainfall interception. U. S. Weather Bureau, Mo. Weather 



Rev., XLVII, 9, Sept., 1919. 



90. Jaenicke, A. J., and Foerster, M. H. The influence of a western yellow- 



pine forest on the accumulation and melting of snow. U. S. Weather 

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91. Kadel, B. 0. An improved form of snow sampler. U. S. Weather Bureau, 



M<>. Weather Rev.. XLVII, 10, Oct., 1919. 



92. Kincer, J. B. The seasonal distribution of precipitation and its frequency 



and intensity in the United States. U. S. Weather Bureau, Mo. Weather 

 Rev., XLVII, 9, Sept., 1919. 



93. Marvin, C. F. The measurement of precipitation; instructions on measure- 



ment and registration of precipitation by means of standard instruments 

 of Weather Bureau. 3d ed., Instrument Div. Circ. E, 37 p., 1913. 



94. Stockman", W. B. Periodic variation of rainfall in arid region. 15 p., Weather 



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95. Thiessex, A. H. Value of snow surveys as related to irrigation projects, p. 



391-396, U. S. Dept, Agr., Yearbook 1911, separate 578. 



96. U. S. Weather Bureau. Instructions to special river and rainfall observers of the 



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97. . Snow and ice bulletin. (^Weekly during winter.) 



98. Wallis, B. C. Rainfall and agriculture in United States. Mo. Weather Rev., 



XLIII, 6, p. 267-274, map. June, 1915. 



SOILS. 



101. Alway, F. J., Files, E. K., and Pinckney, R. M. The determination of humus. 



Nebr. Agr. Exp. Station Bull. 115, 1910. 



102. . Studies of the relation of the nonavailable water of the soil to the hygro- 



scopic coefficient. Nebr. Agr. Exp. Station, Research Bull. 3, 1913. 



103. . Kline, M. A., and McDole, G. R. Some notes on the direct deter- 



mination of the hygroscopic coefficient. U. S. Dept. Agr., Jour. Agr. 

 Research, XI, 4, October 22, 1917. 



104. Bates, C. G. Concerning site. Jour, of Forestry, XVI, 4. (A suggestion 



as to factors controlling height growth.) April, 1918. 



105. . The descriptions and data given under this reference are original con- 



tributions resulting from studies at the Fremont Experiment Station, 

 from 1914 to date, heretofore unpublished; hence given in detail. 



106. Bouyoucos, G. J., and McCool, M. M. The freezing-point method as a new 



means of measuring the concentration of the soil solution directly in the 

 soil. Mich. Agr. Exp. Station, Tech. Bull. 24, 1915. 



107. . . Further studies on the freezing-point lowering of soils. Mich. 



Agr. Exp. Station, Tech. Bull. 31, 1916. 



108. . The freezing-point method as a new means of determining the nature 



of acidity and lime requirements of soils. Mich. Agr. Exp. Station 

 Tech. Bull. 27, 1916. 



