SOILS FERTILIZERS. 121 



the Fractious Resulting Therefrom, bj' A. D. Hall ; The Effect of Long-oontinued 

 Use of Sodium Nitrate on the Constitution of the Soil, by A. D. Hall ; The 

 Analysis of the Soil by Means *of the Plant, by A. D. Hall ; Calcium Cyanamid, 

 by A. D. Hall ; On the Accumulation of Fertility by Land Allowed to Run 

 Wild, by A. D. Hall; The Effect of Plant Growth and of Manures upon the 

 Retention of Bases by the Soil, by A. D. Hall and N. H. J. Miller; The Amounts 

 of Nitrogen as Ammonia and as Nitric Acid and of Chlorin in the Rain WateF 

 Collected at Rothamsted, by N. H. J. Miller; The Determination of Available 

 Plant Food in Soil by the Use of Weak Acid Solvents, Part 2, by A. D. Hall 

 and A. Amos; The Amount and Composition of the Drainage through Un- 

 manured and Uncropped Land, by N. H. J. Miller; On the Function of Silica 

 in the Nutrition of Cereals, Part 1, by A. D. Hall and C. G. T. Morison; The 

 Interaction of Ammonium Salts and the Constituents of the Soil, by A. D. 

 Hall and C. T. Gimingham ; The Flocculation of Turbid Liquids by Salts, by 

 A. D. Hall and C. G. T. Morison; Nitrification in Acid Soils, by A. D. Hall, 

 N. H. J. Miller, and C. T. Gimingham ; Direct Assimilation of Ammonium Salts 

 by Plants, by H. B. Hutchinson and N. H. J. Miller; Some Secondary Actions of 

 IManures upon the Soil, by A. D. Hall ; The Development of the Grain of Wheat, 

 by W. E. Brenchley and A. D. Hall; The Influence of Copper Sulphate and 

 Manganese Sulphate upon the Growth of Barley, by W. E. Brenchley; On the 

 Action of Certain Compounds of Zinc, Arsenic, and Boron on the Growth of 

 Plants, by W. E. Brenchley; The Direct Assimilation of Inorganic and Organic 

 Forms of Nitrogen by Higher Plants, by H. B. Hutchinson and N. H. J. Miller ; 

 On the Absorption of Ammonia from the Atmosphere, by A. D. Hall and N. H. J. 

 Miller; The Experimental Error of Field Trials, by W. B. Mercer and A. D. 

 Hall ; Soil Surveys and Soil Analyses, by A. D. HaU and E. J. Russell ; On the 

 Causes of the High Nutritive Value and Fertility of the Fatting Pastures of 

 Romney Marsh and other Marshes in the Southeast of England, by A. D. Hall 

 and E. J. Russell ; The Development of the Grain of Barley, by W. E. Brenchley ; 

 Experiments at Rothamsted on the Clianges in the Composition of Mangels 

 during Storage, I and II, by N. H. J. Miller ; The Estimation of Carbon in Soils 

 and Kindred Substances, by A. D. Hall, N. H. J. Miller, and Numa Marmu; 

 Nitrogen and Carbon in Clays and Marls, by N. H. J. Miller; The Nitrogen 

 Compounds of the Fundamental Rocks, by A. D. Hall and N. H. J. Miller ; and 

 A Note on Onion Couch, by L. M. Underwood. 



Soil survey of Shawnee County, Kansas, R. I. Throckmorton, W. C. Byers, 

 ET AL. (Kansas ySta. Bui. 200 (1914), pp. 715-749, map 1). — This survey, made 

 in cooperation with the Bureau of Soils of this Department, deals with the 

 soil types, their mechanical and chemical composition and fertility require- 

 ments and crop adaptabilities of an area of 357,120 acres situated in north- 

 eastern Kansas, which topographically is a high plateau frequently cut by 

 valleys of varying size. The greater part of the drainage of the area flows 

 into the Kansas River. 



The soils of the county are divided broadly into upland soils of glacial and 

 residual origin and bottom-land or alluvial soils. Eleven soil types are mapped, 

 of which the Summit silty clay loam with two of its phases is the most extensive 

 and important. The soils of the area are said to be deficient in available nitro- 

 gen and phosphorus and well stocked with potash. Calcium is higher in the 

 bottom soils than in the upland soils. The amount of carbon in these soils is 

 said to be closely related to the physical texture, the sandy soils containing less 

 than the silty soils, and these in turn less than the silty clay soils. 



