1919] SOILS FERTILIZERS. 119 



with the soils of an area of 3,046,400 acres lying in the northern part of the 

 San Joaquin Valley, in the physiographic division know as the Greal Interior 

 Valley of California, and occupying the central part of the State. The region 

 consists chielly of a broad basin-like valley, the slopes being for the most part 

 less than 250 ft. in elevation. In the lower foothills along the margins Of the 

 survey, elevations of 1,000 ft. or more occur, while some of the northwestern 

 part is below tide level. In general, the area is fairly well drained by the San 

 Joaquin River and its tributaries. 



With respect to their origin, the soils of the region have been grouped as 

 residual from consolidated rocks, old valley-filling material from unconsolidated 

 water-laid deposits, recent alluvial, wind laid deposits, and miscellaneous mate- 

 rials. Old valley-fiWing material and recent alluvial soils comprise the greater 

 part of the area. In addition to muck and peat, rough broken and stony lands, 

 and riverwash and tailings, 51 soil types of 27 series are mapped. 



Soil survey of Barry County, Mo., A. T. Swket and E. W. Knorel (U. S. 

 Dept. Agr., Adv. Sheets Field Oper. Bur. Soils, 1916, pp. 44, pis. 3, fig. 1, map 

 1). — This survey, made in cooperation with the University of Missouri, deals 

 with the soils of an area of 506,240 acres situated near the southwestern corner 

 of the State adjacent to the State of Arkansas. Topographically the county is 

 a dissected plain sloping northwestward, the surface ranging from undulating 

 and rolling in the northwestern part to rough and broken in the eastern and 

 southern parts. The uplands attain a maximum elevation of from 1,300 to 

 1,550 ft. above sea level, while the depth of stream cutting ranges from 150 to 

 600 ft. Natural drainage is well established. 



The upland soils of the county are residual in origin, those occupying the 

 first bottoms and terraees of the larger streams alluvial, and those occupying 

 the small, narrow valleys and strips along the outer edge of the main valley 

 largely of colluvial origin. In addition to rough stony land, 16 soil types of 8 

 series are mapped. Baxter gravelly loam, Baxter stony loam, rough stony land, 

 and Lebanon gravelly loam predominate, occupying 2S.9, 15.5, 14.1, and 13.1 per 

 cent of the total area, respectively. 



Soil survey of Miami County, Ohio, E. R. Allen and O. Gossard (U. S. 

 Dept. Agr., Adv. Sheets Field Oper. Bur. Soils, 1916, pp. 50, pis. 8, /(".'/. /, map 

 1). — This survey, made in cooperation with the Ohio Experiment Station, deals 

 with the soils of an area of 261,120 acres situated in the southwestern part of 

 the State. The typography of the area varies from an undulating to rolling 

 terminal moraine in the eastern part of the county to a flat ground moraine 

 in the western portion. Natural drainage is inadequate in the western part. 



The soils of the county are chiefly of glacial origin and were formed largely 

 from the underlying limestone formation and from Niagara limestone. Sixteen 

 soil types of 12 series are mapped. Miami silt loam, Crosby silt loam, and 

 Brookston silty clay loam, occupying 23.5, 18.2, and 14.8 per cent, respectively, 

 of the total area, predominate. 



Soil survey of Berkeley County, S. C. W. J. Latimer, F. Z. Hutton, C. 

 Lounsrury, A. H. Meyer, and M. E. Carr (U. S. Dept. Apr.. Adv. Sheets Field 

 Oper. Bur. Soils, 1916, pp. 42, figs. 2, map 1). — This survey deals with the soils 

 of an area of 792,320 acres lying near the central part of the eastern boundary 

 of the State in the Lower Pine Belt region of the Coastal Plain. The topography 

 in general is level to gently undulating, the elevation ranging from title level to 

 150 ft. above. Along the bluffs of the larger streams and their tributaries the 

 upland is well drained, while back from the bluffs occur more or less extensive 

 flat, poorly-drained areas. 



The upland soils of the county are sedimentary in origin, having been de- 

 rived from unconsolidated sands and clays. The sofls of the first-bottom lands 



