SOILS FERTILIZEES. 511 



clover, but did not have a marked effect on that of tobacco. Rock phosphate 

 used alone gave consistent gains except with tobacco. Used with manure, 

 however, its effect seems to have been negative." Limestone alone produced a 

 moderate increase with oats and clover and with tobacco following clover ; used 

 with phosphorus on clover there was a decided increase over that resulting from 

 phosphorus alone. 



Soil survey of the Marrs farm, S. C. Jones {Ky. Geol. Survey [Rpt.}, 4' 

 ser., 1 (1913), pt. 2, pp. 1109-1118). — ^This report deals with the soils of a farm 

 of 300 acres in the northwestern part of Henderson County, Ky. The topography 

 consists of rolling uplands and flats or bottom lands. The natural drainage of 

 the flats and parts of the upland is poor. 



It is stated that the soils are probably largely of transported origin. These 

 are described in three types which are, in the order of area, yellow silt loam, 

 gray clay loam, and gray silt loam. Chemical analyses made at the Kentucky 

 Experiment Station show the soils of this farm to be poor in total nitrogen and 

 phosphorus and rich in total potassium. All of the soils are more or less acid. 



Liming and the use of leguminous green manures and rock phosphate are 

 suggested for these soils. 



Soil surveys of the Hartford, Madisonville, and Central City quadrangle, 

 S. C. Jones {Ky. Geol. Survey [Rpt.l, 4. ser., 1 {1913), pt. 2, pp. 1119-1132).^ 

 This report is in two parts. 



The first part deals with the soils of the Hartford quadrangle, an area of 

 158,080 acres in the western coal field of Kentucky, the topography of which is 

 divided into low flat bottoms, gently rolling upland, and broken hilly land. 

 The soils are of residual and transported origin, the former occupying the up- 

 land and the latter the bottom land. Five soil types are recognized, of which 

 the yellow silt loam predominates, covering more than half the entire area. 



The second part deals with the Madisonville and Central City quadrangles, 

 which cover an area of 316,160 acres in the central part of the western coal 

 field. The topography is divided into bottom lands, rolling upland, hilly areas, 

 and high flat ridges. The soils are of residual and transported origin and are 

 classed as yellow silt loam, which occupies the undulating and hilly areas, gray 

 silt loam, and low flat bottom soils. The first is the most extensive. 



Soils of Meade and Breckinridge [Counties], S. C. Jones (Ky. Geol. Survey 

 [Rpt.l, 4. ser., 1 (1913), pt. 2, pp. 1139-1156).— This report deals with the soils 

 of an area in northwestern Kentucky which comprises two counties, the topog- 

 raphy of which is rather diversified. 



The soils are derived mainly from sandstone and limestone. The soils of 

 the limestone region are mainly residual. The surface soil to a depth of 

 6 or 8 in. varies from yellowish or reddish loam to reddish or yellowish fine 

 sandy loam with a reddish clay loam subsoil. The sandstone soils are rather 

 uniform, the surface layer to a depth of 6 or 8 in. varying from a gray to a 

 light brown fine sandy loam which is very loose in texture, has a poor moisture- 

 holding capacity, and usually has a low content of organic matter. The sub- 

 soil is a yellow fine sandy material containing considerable clay. Chemical 

 analyses of both types of soil showed them to be relatively rich in potassium 

 and poor in nitrogen and phosphorus. 



The results of analyses and pot culture experiments with different fertilizers 

 indicate that the most practical method of improving these soils is to use 

 leguminous green manures, lime, and rock phosphate, and to prevent soil 

 washing. 



The soils and agriculture of the southern Hew York highland region, 

 E. O. FippiN (Cornell Countryman, 12 (1915), No. 7, pp. 578-584, 600, 602, figs. 

 3). — This article deals with the soils and agriculture of an area of 15,000 square 



