118 EXPEKIMENT STATION EECOED. 



flow made on the Missouri River proper and tributary basins during 1911. 

 Tables are included giving gage heights and daily and monthly discharges at 

 each station. Information is also given regarding the legal aspects of the ap- 

 propriation of water, particularly for irrigation purposes. 



Surface water supply of the Colorado River Basin, 1911, R. Follansbei:. 

 W. B. Freeman, and G. C. Baldwin (Z7. 8. Oeol. Survey, Water-Supply Paper 

 309 (1914), PP- 266, pis. 4). — This paper presents results of measurements of 

 flow made on Green River and the main Colorado River and tributary basins. 

 Tables are included giving gage heights and daily and monthly discharges at 

 each station. A report is also given of the flood of October, 1911, in the 

 region of the San Juan, San Miguel, and La Plata Mountains, which resulted in 

 severe agricultural losses. 



Surface water supply of the South. Atlantic coast and eastern Gulf of 

 Mexico Basins, 1912, W. E. Hall and C. H. Pieece (Z7. S. Geol. Survey, Water- 

 Supply Paper 322 {1914), PP- 98, pis. 4). — This paper reports the results of 

 measurements of flow made during 1912 in the James, Roanoke, Yadkin, Savan- 

 nah, Sautee, and Altamaha River Basins on the South Atlantic coast, and in 

 the Apalachicola, Choctawhatchee, Escambia, Mobile, and Pearl River Basins 

 of the east coast of the Gulf of Mexico. Tables are also included giving gage 

 heights and daily and monthly discharges at each station. 



SOILS— FERTinZERS. 



Treatise on soils for farmers and foresters, E. A. Mitscheelich {Boden- 

 kundc fur Land- viid Forsticirte. Berlin, 1913, 2 rev. ed., pp. XI-\-317, figs. 

 35). — In this complete revision of his previous work (E. S. R., 17, p. 838), the 

 Huthor incorporates the more important results of progress in soil investigation 

 during the past seven years. In recognition of the pronounced tendency during 

 this period to develop physiological soil study in place of geological and physical 

 soil investigations, the author treats the subject largely from the former view- 

 point and emphasizes only those chemical and physical properties of soil 

 which condition plant growth. 



Various conceptions of the law of minimum figure prominently in the treat- 

 ment of the subject. Liebig's law of minimum is used qualitatively, but in 

 view of the importance of a quantitative plant-physiological study of soils 

 which is especially emphasized, the work is based chiefly on the author's 

 quantitative conception of the law of minimum which is explained in its vari- 

 ous applications to soil study. 



The work is divided into two parts, the first treating the theoretical side of 

 the subject in which soil energy, in the form of heat, and soil water are con- 

 sidered as the physical factors of plant growth, and the different plant foods 

 as chemical factors. It is attempted to determine definitely on what specific 

 properties of the soil these factors depend and, as far as possible, the par- 

 ticular influence which each factor exerts on plant growth. 



The second part summarizes the practical application of the physical and 

 chemical factors and conditions dealt with in the first part, in the cultivation, 

 improvement, and judging of soils, and in measures used by pi'actical farmers 

 :ind foresters in their work. For convenience in this respect, soils are divided 

 into three types among which there is considered to be a distinct transition, 

 namely, light soils of which dry sandy and damp moor soils are subdivisions, 

 medium soils, and heavy soils, i)articnlarly tenacious clays. 



Mathematical tables and formulas useful in the study of soils, are appended. 



Moor cultivation in Austria, W. Bersch (Internat. Inst. Ayr. [Rome], Mo. 

 Bui. Ayr. Intel, and Plant Diseases, 4 (1913), No. 11, pp. 1672-1677).— The 



