128 EXPERIMENT STATION RECOKD. [Vol. 41 



as rough broken and stony land, tidal marsh, riverwash, coastal beach and 

 dunesand, and muck and peat, 28 soil types of 9 series are mapped. Hanford 

 fine sandy loam, Hanford sandy loam, rough broken and stony land, and Yolo 

 loam, occupying 14.9, 9.2, 8.9, and 8.6 per cent of the total area, respectively, 

 are the prevailing types. 



Soil survey of Shelby County, Ky., C. Van Duyne, L„ R. Schoenmann, and 

 S. D. AvEEiTT (U. S. Dept. Agr., Adv. Sheets Field Oper. Bur. Soils, 1916, pp. 61, 

 pi. 1, fig. 1, map 1). — This survey, made in cooperation with the Kentucky Ex- 

 periment Station, deals with the soils of an area of 244,480 acres situated in 

 the north-central part of the State and lying within the Lexington Plain. The 

 topography varies from undulating to rolling and hilly. Natural drainage is 

 well established. 



The upland soils of the county are residual from limestones and shales, while 

 alluvial soils occur on the stream terraces and bottom lands. Eight soil types 

 of 6 series are mapped. Shelbyville silt loam, Cincinnati silt loam, and Eden 

 clay, occupying 45.4, 26.8, and 17.7 per cent of the total area, respectively, 

 predominate. 



S. D. Averitt briefly discusses the fertility of the different types of soils found 

 in the county as indicated by chemical analyses of the surface and subsoil. 



Soil survey of Calhoun County, Mich., R. F. Rogers and W. G., Smith (U. S. 

 Dept. Agr., Adv. Sheets Field Oper. Bur. Soils, 1916, pp. 5^, figs. 2, map 1). — 

 This survey deals ^^•ith the soils of an area of 443,520 acres situated in the 

 south-central part of the State. The topography is said to be typical of a 

 glaciated region, comprising rolling to hilly morainic belts with intervening 

 strips having a level to gently undulating surface. Natural drainage is gen- 

 erally well established in the upland, although many swamps, ponds, and lakes 

 occur throughout the region. 



The soils of the county are largely of glacial origin, having been derived 

 from ingneous and metamorphic rocks, while part of the material has come 

 from sedimentary limestone, sandstone, and shale. In addition to muck and 

 peat, which occupy 12.5 per cent of the total area, 22 soil types of 11 series 

 are mapped. Coloma loam. Fox loam, and Bellefontaine loam, occupying 

 16.6, 15.2, and 11.3 per cent of the area, rsepectively, are the prevailing types. 



Soil survey of Amite County, Miss., A. L. Goodman, A. H. Meyer, R. W. 

 McCluee, and B. H. Hendrickson {U. 8. Dept. Agr., Adv. Sheets Field Oper. 

 Bur. Soils, 1917, pp. 38, fig. 1, map 1 ) . — This sui-vey deals vrith the soils of an 

 area of 456,960 acres situated in the southwestern part of the State. The topog- 

 raphy varies from almost level to hilly but is prevailingly rolling. Natural 

 drainage is generally well established throughout the region. 



The upland soils of the county have been derived from loessial material over- 

 lying Coastal Plain beds of sandy clay and gravel. The second bottom lands 

 comprise old alluvium which has undergone considerable change through the 

 influence of varying drainage conditions, while the first bottoms consist of 

 recent alluvium and are still subject to overflow. The loessial soils prevail 

 over most of the area. Seventeen soil types representing 14 series are mapped. 

 Ruston fine sandy loam, Grenada silt loam, and Ruston very fine sandy loam, 

 occupying 40.3, 20.4, and 12.6 per cent of the total area, respectively, pre- 

 dominate. 



Soil survey of Callaway County, Mo., H. H. Krusekopf, J. H. Agee, and 

 R. H. Hall (TJ. S. Dept. Agr., Adv. Sheets Field Oper. Bur. Soils, 1916, pp. S8, 

 fig. 1, viap 1). — This survey, made in cooperation with the Agricultural Experi- 

 ment Station of Missouri, deals with the soils of an area of 517,120 acres situ- 

 ated in the central part of the State and on the north side of the Missouri 



