SOILS — FERTILIZERS. 211 



Soil survey of Hernando County, Florida, G. B. Jones and T. M. Mobeison 

 (f7. S. Dept. Agr., Advance Sheets Field Operations Bur. Soils, 1914, pp. 30, 

 pis. 4, fig. 1, map 1). — ^This survey, issued September 30, 1915, deals with the 

 soils of an area of 302,720 acres on the western coast of Florida, the topography 

 of which ranges from level to hilly. There is no well-defined drainage system 

 in the county, most of the surface water escaping through sinks and under- 

 ground streams. The soils of the county are largely sandy, although there are 

 some areas of clayey soils and a number of areas having a clay subsoil. The 

 soils are grouped into four divisions, namely, (1) imperfectly drained flat- 

 woods, (2) undulating to rolling areas, (3) depressed areas, and (4) tidal over- 

 flow soils. Including muck, swamp, tidal marsh, and I'ock outcrop, 16 soil 

 types are mapped, of which the Norfolk fine sand is the most extensive, covei'- 

 ing nearly half the county. 



Soil survey of the Indian River area, Florida, C. N. Mooney and M. Bald- 

 win {U. S. Dept. Agr., Advance Sheets Field Operations Bur. Soils, 1913, pp. ^7, 

 pi. 1 fig. 1, map 1). — This survey, issued July 31, 1915, deals with the soils of 

 an area of 218,240 acres along the middle east coast of the Florida Peninsula, 

 the surface features of which range from low coastal swamps and level flat- 

 woods to dune-like coastal ridges. The drainage is mainly effected by seepage. 

 The soils of the area range from cumulose deposits through sands, or a mixture 

 of sand, gravel, and shell fragments, to calcareous clay. They are grouped 

 with reference to origin into cumulose soils, unconsolidated marine material, 

 and residual or partly residual soils. Seventeen soil types, of 8 series, are 

 mapped, of which the St. Lucie sand is the most extensive. 



Soil survey of Terrell County, Georgia, D. D. Long and M. Baldwin ( V. S. 

 Dept. Agr., Advanee Sheets Field Operations Bur. Soils, 1914, pp- 62, fig. 1, map 

 1). — This survey, made in cooperation with the Georgia State College of Agri- 

 culture, was issued September 13, 1915. It deals with the soils of an area of 

 213,760 acres in southwestern Georgia, the topography of which ranges from 

 level to rolling. The county is said to be, as a whole, well drained. 



The soils of the county are alluvial and upland, the latter being derived 

 mainly from unconsolidated clays, sands, marls, and consolidated limestone. 

 The soils are divided according to texture into sands, fine sands, loamy sands, 

 sandy loams, loams, clay loams, and clays. Including muck and swamp, 35 

 soil types, of 15 series, are mapped, of which the Greenville series, including 

 seven types, is the most extensive. 



Soil survey of Wilkinson County, Mississippi, W. E. Tharp and W. M. 

 Spann {U. S. Dept. Agr., Advance Sheets Field Operations Bur. Soils, 1913, pp. 

 52, pi. 1, fig. 1, map 1). — This survey, made in cooperation with the State of 

 Mississippi, was issued July 17, 1915. It deals with the soils of an area of 

 426,880 acres in southwest Mississippi, the western part of which consists of 

 level delta lands and the remainder mainly of rolling to hilly uplands dissected 

 by innumerable drainage lines. 



Tlu-oughout the uplands of the county the prevailing surface material is loess. 

 It is from 20 to 50 ft. deep on the western hills, but gradually thins toward the 

 east until its average depth is but a few feet. The loess is generally underlaid 

 by a red sandy formation. In the eastern section soils derived in part from 

 the underlying sands and clays are found. Including rough broken laud, 

 meadow overwash, and river wash, 17 soil types, of 9 series, are mapped, of 

 which the Memphis silt loam is the pi*edominating tj'pe, covering over half the 

 county. 



Soil survey of Douglas County, Nebraska, A. H. Meyer, E. H. Smies, T. M. 

 Btjshnell, R. R. Sp afford, R. R. Burn, and C. W. Smith (17. S. Dept. Agr., 

 Advance Sheets Field Operations Bur. Soils, 1913, pp. 4S, fig' 1, niap 1). — This 



