lf>l!>] SOILS — FERTTLIZEBS. 217 



abundant than phosphorus. The need of lime is very pronounced. Manuring, 

 next to liming, is considered the most essential need of the soils. As is the 

 case in practically all Iowa soils, potash is present in such large amounts that 

 applications of potash fertilizers "are quite unnecessary if proper soil condi- 

 tions arc maintained." 



Soil survey of Anoka County, Minn., W. (\. Smith, G. H. Nesom, and E. G. 

 Roth (/". fif. Dept. Agr., Adv. Sheets Field Oper. Bur. Soils, 1916, pp. 30, fig. 1, 

 map 1). — This survey, made in cooperation with the Minnesota Experiment Sta- 

 tion, deals with the soils of an area of 275,840 acres, situated in the south- 

 eastern part of the State a few miles north of Minneapolis. The greater part 

 of the county comprises glacial drift and OUtwash plains having a rolling to 

 nearly level surface. Numerous level areas of peat occur throughout the re- 

 gion, lying from 2 to 10 ft. or more below the general level of the upland. The 

 upland ranges from 850 to 1,000 ft. above sea level. Natural drainage is well 

 established in all of the county except the peat areas. 



The soils of the area are derived from young gray glacial drift, red glacial 

 drift, deep wind-laid sand, and glacial-river terrace material washed from the 

 glacial drift sheets. In addition to peat, 9 soil types of 5 series are mapped. 

 The peaty areas occupy 37.6 per cent of the total area, while the predominating 

 soil types are Merrimac loamy fine sand and Merrimac loamy sand, occupying 

 3-..'? and 15.5 per cent of the area, respectively. 



Soil survey of Halifax County, N. C, R. B. Hardison and L. L. Brinkley 

 {U. S. Dept. Agr., Adv. Sheets Field Oper. Bur. Soils, 1916, pp. 1,1, fig. 1. map 

 1). — This survey, made in cooperation with the North Carolina Department of 

 Agriculture, deals with the soils of an area of 455,040 acres situated in the 

 northeastern part of the State, partly in the Piedmont Plateau and partly in 

 the Coastal Plain. The topography of the county varies from flat or undulat- 

 ing to steeply rolling and hilly. Natural drainage is well established. 



The soils of the area are of residual, sedimentary, and alluvial origin. The 

 residual soils have been derived from the underlying crystalline rocks and the 

 sedimentary soils from the unconsolidated sands and clays. Twenty-nine soil 

 types representing 19 series are mapped. Norfolk fine sandy loam is the 

 principal type, occupying 23.2 per cent of the total area. 



Soil survey of Stanly County, N. C, R. C. Jurney and»S. O. Perkins (U. S. 

 Dept. Agr., Adv. Sheets Field Oper. Bur. Soils, 1916, pp. 34, fig. 1, map 1). — This 

 survey, made in cooperation with the North Carolina Department of Agricul- 

 ture, deals with the soils of an area of 261,120 acres situated in the south- 

 central part of the State. The topography of the county varies from almost 

 level to gently rolling, rolling, steep, and broken, the greater part of the region . 

 being rolling. Natural drainage is complete. 



The area lies wholly within the Piedmont Plateau province, and the soils 

 with the exception of a small area of alluvial soil, are residual in origin, being 

 derived from the underlying slate and igneous dike rocks. Exclusive of rough 

 stony land, 13 soil types of 6 series are mapped. Georgeville gravely silt loam 

 and Alamance slate loam, occupying 44.7 and 11.1 per cent of the total area, 

 respectively, predominate. 



Soil survey of Marion County, Ohio, T. M. Morrison, O. Gossard, and G. K. 

 Sivaslian (U. S. Dept. Agr., Adv. Sheets Field Oper. Bur. Soils, 1916, pp. 37, fig. 

 1, map 1). — This survey, made In cooperation with the Ohio Experiment Sta- 

 tion, deals with the soils of an area of 261,769 acres situated just northwest 

 of the center of the State. Topographically, the county is said to be remark- 

 ably uniform, occupying a broad, smooth to rolling plain more or less dis- 

 sected by drainage ways. Natural drainage Is quite inadequate. 



