120 EXPERIMENT STATION RECOED. 



soils. Including rough, stony land and river wash, 30 soil types, of 11 series, 

 are mapped, of which the Hanceville fine sandy loam and stony loam and the 

 rough stony land are the most extensive. It is stated that most of the soils, 

 particularly the upland types, are in need of lime. 



Reconnoissance soil survey of the Sacramento Valley, California, L. C. 

 IIOLiiES, J. W. Nelson, et al. (U. S. Dept. Agr., Advance Sheets Field Opera- 

 tions Bur. Soils, 1913, pp. 148, pis. S, fig. 1, map 1). — This survey, made in 

 cooperation with the California Experiment Station and issued April 26, 1915, 

 deals with the soils of an area of 4,015,360 acres, comprising the north half 

 of the Great Interior Valley of California. The area is drained by the Sacra- 

 mento and San Joaquin rivers. The topography of the valley is that of a struc- 

 tural trough formed by the uplift of the surrounding mountains. 



The soils of the valley are derived from or consist of four classes of material, 

 namely, (1) residual material, (2) old valley -filling material, (3) recent alluvial 

 fan and alluvial material, and (4) wind-deposited material. The soils as they 

 exist at present are largely the product of the weathering of the older of these 

 materials, while the very recently deposited material has been changetl in place 

 very little. Including five miscellaneous soils and a number of undifferentiated 

 types, sixty -seven soil types are mapped in the area, of which the San Joaquin 

 loams, the Willows clay adobe, Madera loams, Sacramento clays, Stockton clay 

 adobe, and muck and peat are the most extensive single types. It is stated that 

 large areas in the valley are affected by injurious quantities of alkali, the 

 largest amount being found on the west side of the valley. 



Soil survey of Stewart County, Georgia, D. D. Long, M. W. Beck, E. C. 

 Hall, and W. W. Bukdette {U. S. Dept. Agr., Advance Sheets Field Operations 

 Bur. Soils, 1913, pp. 66, pis. 2, fig. 1, map 1). — This survey, made in cooperation 

 with the Georgia State College of Agriculture and issued 3Iay 28, 1915, deals 

 with the soils of an area of 298,8.80 acres in the Coastal Plain region of south- 

 western Georgia. The topogi'aphy ranges from level or gently undulating to 

 rough and broken, and the surface in general is badly dissected by erosion, leav- 

 ing level interstream areas. 



The soils are divided into upland soils of sedimentary origin and old stream 

 terrace and overflowed first bottom soils, both of alluvial origin. The soils 

 range in texture from loose, coarse, incoherent sands to heavy, sticky, impervious 

 clays. Including meadow, swamp, and rough gullied land, forty-six soil types of 

 twelve series are mapped, of which the Susquehanna clay is somewhat the most 

 extensive. The Ruston is the most extensive series. " With a few exceptions, 

 the several types of soil occur in complicated areas, and no very large areas of 

 any one type are found." 



Soil survey of Delaware County, Indiana, L. A. Hurst and E. J. Gkimes 

 {U. S. Dept. Agr., Advance Sheets Field Operations Bur. SoUs, 1913, pp. 31, fig. 

 1, map 1). — ^This survey, made in cooperation with the Indiana Department of 

 Geology and issued May 29, 1915, deals with the soils of an area of 2.50.SS0 acres 

 in east-central Indiana, the topt)graphy of which varies from level to midulating 

 and in some places broken. The I^Iississinewa and West Fork of White River 

 with their tributaries drain the county. 



Glacial till, consisting chiefly of clay intermingled with sand, gravel, and silt 

 covers the entire county to a depth of 50 to 200 ft., and is the source of the 

 upland soils. " The bottom lands are derived from reworked and redeposited 

 materials which represent wash from the uplands." Including muck, eight soil 

 types of five series are mapped, the Miami silt loam covering 67.8 per cent of 

 the county and the Clyde silty clay loam 21.3 per cent. 



Soil survey of Hendricks County, Indiana, W. E. Tharp and E. J. Quinn 

 (U. S. Dept. Agr., Advance Sheets Field Operations Bur. Soils, 1913, pp. 38, fig. 



