1917] SOILS FERTILIZERS. 813 



Soil survey of Alleghany County, North Carolina, R. T. A. Btjbke and 

 H. D. Lambekt {U. 8. Dept. Agr., Advance Sheets Field Operations Bur. Soils, 



1915, pp. 26, fig. 1, map 1). — This survey, made in cooperation with the North 

 Carolina Department of Agriculture, deals with the soils of an area of 133,760 

 acres in northwestern North Carolina which lies in the Appalachian Mountain 

 and Plateau province. Mountainous topography prevails, but there are many 

 rounded elevations of generally smooth surface. There is said to be little 

 undrained land in the county. 



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

 and rock outcrop, eight soil types of five series are mapped, of which the 

 Ashe loam and Porters loam cover 51.4 and 25.3 per cent of the area, respec- 

 tively. 



Soil survey of Hampton County, South Carolina, M. W. Beck and A. L. 

 Goodman {TJ. S. Dept. Agr., Advance Sheets Field Operations Bur. Soils, 1915, 

 pp. 37, fig. 1, map 1). — This survey deals with the soils of an area of 392,320 

 acres in southern South Carolina which lies whoUy within the Coastal Plain 

 province. The topography ranges from flat to gently rolling and rolling. Re- 

 gional drainage Is not well developed. The soils range in texture from coarse 

 sand to clay. Including swamp, 21 soil types of 10 series are mapped, of which 

 the Norfolk fine sandy loam and the Coxville fine sandy loam cover 13.6 and 

 11.8 per cent of the area, respectively. The Norfolk series covers about 40 

 per cent of the area. 



[Soil studies at the Wisconsin Station] (Wisconsin Sta. Bui. 275 {1917), 

 pp. 18-24, figs. 2). — Experimental work at the station on the management of 

 different Wisconsin soils, soil drainage, and soil acidity is briefly reviewed. 



[Soils], P. S. Burgess (Rpt. Expt. Sta. Com., Hawaii. Sugar Planters' Assoc, 



1916, p. IS). — Studies of old and new Hawaiian cane soils to determine the 

 effect of continued cane culture on the chemical composition of the soil showed 

 that " the older fields contain more readily available but less total plant food 

 than the new lands. About 20 per cent of the total nitrogen and nearly 40 per 

 cent of the total phosphoric acid have disappeared from the surface soils of the 

 fields which have been cropped. . . . The bacterial activity in these soils was 

 pronounced. Nitrification was better in the older fields. Gypsum and reverted 

 phosphate stimulated nitrification but slightly." 



Studies of acid soils of Hawaii showed that " ammonlfication is universally 

 low and that nitrification, though slightly better, is also low. The addition 

 of gypsum and reverted phosphate at the rate of 2 tons per acre Increased the 

 nitrification of dried blood by over 50 per cent. When just sufficient lime car- 

 bonate was added to neutralize exactly the soil acidity the ammonlfication and 

 nitrification of dried blood was in many cases more than doubled, while in two 

 instances this beneficial bacterial action was increased tenfold or more." 



Combinations of soils in plain and mountainous regions, S. S. Neusteuev 

 (N^ousteoueit) {Pochvovied{enie (PMologie), 17 (1915), Nos. 1, pp. 62-7S; 

 2, pp. 51-59). — This is a classification of soils with reference to topography and 

 climate. It is pointed out that the soils are influenced by the climatic zone 

 regardless of the relief in the zone. 



Separation of oxids of iron and aluminum in sandy and pebbly soils of 

 Finland, B. Aabnio (Pochvoviedi^nie (P6dologie), 17 (1915), No. S, pp. 1-23). — 

 This article deals vnth the formation of ortsand and ortstein and related com- 

 binations and gives tables of analyses of samples of these materials from 

 Hannover, Holstein, Pomerania, and Finland. 



Ferrification In soils, P. E. Brown and G. E. Corson (SoU Sci., 2 (1916), 

 No. 6, pp. 549-573, figs. 8). — ^The literature of the subject is reviewed and tests 



