26 EXPEEIMENT STATION EECORD. 



SOILS— FERTILIZERS. 



Soil mapping" and soil instruction, Wiliielm Gkaf zu Leiningen (Centbl. 

 Gesam. Forstw., 40 (1914), No. 3-4, pp. 81-97). — ^The author discusses soil 

 mapping from the viewpoint of the farmer and the forester, pointing out its 

 uses and what in his opinion it should cover. A list of references to related 

 literature is included. 



The question of soil maps, Graf zu Leiningen (Natuinv. Ztschr. Forst u. 

 Landiv., 12 (,1914), ^0. 3, pp. 114-122; abs. in Internat. Inst. Agr. [Rome], Mo. 

 Bui. Agr. Intel, and Plant Diseases, 5 {1914), No. 5, p. 624).— This artfcle 

 covers substantially the same ground as that noted above. 



Soil survey of Pinellas County, Florida, G. B. Jones and T. M. Mobbison 

 {U. S. Dept. Agr., Advance Sheets Field Operations of the Bureau of Soils, 

 1913, pp. 31, pis. 6, fig. 1, map 1). — This survey, issued September 30, 1914, 

 deals with an area of 166,400 acres of -^ aried topography on the mid-west coast 

 of Florida containing seven different types of soil in six series as follows: 

 Norfolk, Leon, Parkwood, and Plummer which are gray soils, and Portsmouth 

 and Fellowship which are black, besides four miscellaneous types of muck, 

 swamp, coastal beach, and tidal marsh soils. Of these soil types the most 

 important and valuable is the Norfolk fine sand. "There is a large acreage 

 of undeveloped land in the county." Drainage is deficient in many cases. 



McDonougli County [Illinois] soils, C. G. Hopkins, J. G. Mosier, J. H. Pet- 

 tit, and O. S. Fisher {Illinois Sta. Soil Rpt. 7 {1913), pp. 46, pis. 2, figs. 7).— 

 This report deals briefly with the physiography, topography, and formation of the 

 soils of the county and more fully with .soil material and soil types, chemical 

 composition of the soil, and field tests of the fertilizer requirements of certain 

 of the prevailing types 



McDonough County lies in the upper Illinois glaciation. Its soils are divided 

 into three classes, as follows: (1) Upland prairie soils, rich in organic matter; 

 (2) upland timber soils, including those zones along stream courses over which 

 the forests once extended; and (3) swamp and bottom-land soils, which include 

 the flood plains along streams. The timberlands are divided chiefly into two 

 classes, the undulating and the hilly areas. The common prairie soil known 

 as brown silt loam occupies 55 per cent of the area of the county, while the 

 yellow silt loam of the hilly land is the next most extensive type, covering 25 

 per cent of the county. 



" General statements relating to the total quantities of plant food in the 

 plowed soil . . . emphasize the fact that the supplies of some of these neces- 

 sary elements of fertility are extremely limited when measured by the needs 

 of large ci-op yields. . . . The most significant fact revealed by the investiga- 

 tion of the soils of this county is the low phosphorus content of the common 

 brown silt loam prairie." 



Chemical analyses of some Kansas soils, C. O. Swanson {Kansas Sta. Bui. 

 199 {1914), PP- TIII+633-715). — This bulletin discusses the chemical composi- 

 tion of soils in relation to crop production, and reports analyses of type soils 

 from representative areas of the State comprising portions of Allen, Brown. 

 Russell, Finney, Riley, Sedgwick. Butler, Doniphan, and Hai-per counties, most 

 of which are in areas surveyed and mapped by the Bureau of Soils of this 

 Department. The methods used are described and the results of analyses are 

 discussed with reference to the crop requirements and fertilizer needs of the 

 different types. In some cases an attempt was made to study the depletion 



