SOILS — FEETILIZEES. 417 



cities. The conclusion is readied that where liglitning rods have been cor- 

 rectly installed they have furnished a high degree of protection. 



SOILS— FERTILIZERS. 



Soil survey of Colquitt County, Georgia, A. T. Sweet and J. B. R. Dickey 

 (U. S. Dcpt. Agr., Advance Sheets Field Operations Bur. Soils, 191^, pp. 39, 

 pis. 2, fig. 1, map 1). — This survey, made in cooperation with the Georgia State 

 College of Agriculture and issued December 24, 191o, deals with the soils of an 

 area of 34S,1G0 acres in southern Georgia, the topography of which is mainly 

 gently undulating to rolling, with some hilly and broken and some flat, poorly 

 drained areas. The county as a whole is said to be well drained. 



" The soils of Colquitt County are of Coastal Plain origin and are almost 

 uniformly sandy in texture at the surface, with a sandy clay subsoil, making 

 them easy to cultivate and retentive of moisture." Including swamp, 22 soil 

 types of 10 series are mapped, of which the Tifton series, including sandy loam, 

 fine sandy loam, and coarse sandy loam, " embraces the most extensive and pro- 

 ductive and also the most highly improved sections of the county." The Nor- 

 folk sandy loam is the second most extensive type. 



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

 Dept. Agr., Advance Sheets Field Operations Bur. Soils, 1914, pp. 25, fig. 1, 

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

 Agriculture and issued December 18, 1915, deals with the soils of an area of 

 174,080 acres in north-central Georgia, the topography of which is gently rolling 

 to hilly, affording ample drainage. 



The soils of the county are of residual and alluvial origin, and belong 

 mainly to the Piedmont Plateau soil province. The alluvial soils cover only a 

 small percentage of the area. In addition to rock outcrop and meadow, 11 soil 

 types of five series are mapped, of which the Cecil soils, including clay loam, 

 sandy loam, gravelly loam, stony clay loam, and fine sandy loam are much the 

 most important and extensive. 



Soil survey of Jackson County, Georgia, D. D. Long and M. Baldwin ( U. S. 

 Dept. Agr., Advance Sheets Field Operations Btcr. Soils, 191-i, pp. 27, fig. 1, 

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

 Agriculture and issued October IS, 1915, deals with the soils of an area of 

 221,440 acres in northeastern Georgia. Jackson County is situated in the heart 

 of the Piedmont section of the States and consists of a rolling plain or plateau, 

 the divides of which are " generally smooth, undulating, or gently rolling, 

 with a gentle slope on each side toward the stream courses, the surface becom- 

 ing steeper and more irregular as the stream valleys are approached." The 

 entire county is well drained. 



The soils are of residual and alluvial origin. Seven soil types of four series 

 and two miscellaneous types are mapped in the county. The Cecil soils cover 

 S8.G per cent of the county, the Cecil clay loam being the most widely de- 

 veloped type. 



The soils and agricultural development of tlie Hudson Valley, E. O. Fippin 

 {Cornell Countryman, 13 {1915), No. 1, pp. 23-27, figs. 2).— This article deals 

 with the general characteristics, fertility requirements, and crop adaptabilities 

 of an area of about 6,200 square miles comprising parts of 13 counties in south- 

 eastern New York. The topography of the southern part is mountainous and of 

 the remainder rolling to hilly. With reference to origin, the soils are divided 

 into first bottom, swamp, terrace, lake, and glacial soils, and nonagricultural 

 types consisting of rough stony land and rock outcrop. The glacial soils, includ- 

 ing the Gloucester, Dutchess, Dover, and Cossayuna series, are said to cover 



