720 EXPERIMENT STATION RECORD, • IVol. 43 



almost level area, broken along the coast and to a lesser degree along streams 

 by low ridges. The topography ranges from shallow undrained l)asins througli 

 flat, poorly drained areas to excessively drained ridges. The soils vary from 

 loose sands to heavy clays and peaty muck, but tine sands predominate. Tlie 

 soils are of residual, alluvial, and cumulose origin, including swamp, tidal 

 marsh, peaty muck, and coastal beach. Sixteen soil types of 10 series are 

 luappc'd, of which the St. .Johns, Bladen, and Leon fine sands are the three 

 I predominating types. 



Soil survey of La Salle Parish, La., C. Lounsbvky and R. F. Rogeks (17. S. 

 Dept. Agr., Adv. Sheets Field Oper. Bur. Soils, 1918, pp. 42, pis. 2, fig. 1, map 1). — 

 This survey deals with the soils from an area of 394,880 acres in north-central 

 Louisiana, which comprises a gently rolling to rolling region in the central part, 

 a relatively low, undulating flatwoods region in the northwestern part, and low 

 alluvial belts subject to inundation in the southern part. The area lies within 

 the Gulf Coastal Plain and for the most part the uplands are well drained. A 

 few level areas have no well defined drainage courses and are swampy. The up- 

 land soils are of sedimentary origin. Twenty-six soil tyi>es of 1.5 series are 

 mapped, of which the Montrose silty clay loam, the Orangeburg fine sandy 

 loam, and the Sharkey clay are the most extensive individual types. 



Soil survey of Madison County, Miss., W. E. Tharp, E. H. Smies, and 

 <J. W. MusGRAVK (['. N. Dept. Agr., Adv. Sheets Field Oper. Bur. Soils, 1017, 

 pp. 37, pi. 1, fig. 1, map 1). — This survey, made in cooperation with the State of 

 Mississippi, deals with the .soils of an area of 404,000 acres in central Missis- 

 sippi. 



The central and southern parts of the county are undulating to rolling, while 

 the northern and northeastern parts are more or less hilly. INIost of the up- 

 lands, second bottoms, and the small branch bottoms are cleared, while the 

 overflow lands of the larger streams are forested. Nearly all of the county is 

 drained by the Big Black River. 



The soils are mainly silts and silty clay loams free from stones and gravel. 

 The prevailing surface formation is loess. Thirteen soil types of 9 series are 

 mapped, of which the Grenada silt loam and the Vicksburg silt loam cover 

 4.3.4 and 12 per cent of the area, respectively. 



Soil survey of Websf^r County, W. Va., C. N. Mooney (17. S. Dept. Agr., 

 Adv. Sheets Field Oper. Bur. Soils, 1918, pp. 2Jf. fig. 1, map 1). — This survey, 

 made in cooperation with the West Virginia geological survey, deals with, the 

 soils of an area of 357,120 acres in central AVest Virginia, lying in the Alle- 

 gheny Plateau section of the Appalachian Province. The topography is moun- 

 tainous. The soils are of residual and alluvial origin. Including rough stony 

 land, seven soil types of five series are mapped, of which De Kalb stony 

 silt loam covers G6.4 and rough stony land 21.9 per cent of the area. 



Agricultural characteristics of the cultivated soils of the coast of Peru, 

 .T. A. »E Lavali.e (Inform, y Mem. Soc. Ingen. Peru. 20 (1918), Nos. .}. pp. 

 129-143; 5, pp. 172-189; 6, pp. 26.',-275 ; 7, pp. 307-320) .—Thin report deals with 

 the geology and physical and chemical properties of the cultivated soils of the 

 coastal districts of Peru, and includes 30 tables of analyses. 



Soils of practically all types as regards physical properties are found in the 

 region. The important types are clays, clay sands, sandy soils, alkali soils, 

 and so-called humus soils. The alkali soils occur mainly in the lower valleys 

 due to inadequate drainage. The character of the subsoil is very variable. 

 Most of the coastal soils are rich in nitrogen which, however, occurs largely is 

 unavailable organic forms. The soils are also generally well supi)lied with 

 phosphoric acid, but are deficient in available potash and lime.^ 



