SOILS — FERTILIZERS. 813 



wasted during the six warm months. One oubic meter per second is said to be 

 sufficient to irrigate 1,000 hectares (2,470 acres). The area at present irrigated 

 is about 9,880,000 acres, but much of this area receives water for so short a time 

 that cotton can not be grown. 



The influence of ocean spindrift and blown spray on the chlorin content 

 of inland ground waters, W. Barb {Jour. Hyg. [Cambridge], 14 (1914), No. 

 1, pp. 119-128, figs. 3). — Studies of the ground waters of that part of Scotland 

 lying south of the river Forth, an area which shows appreciable differences in 

 its meteorological conditions, led to the conclusions that the ocean, through the 

 agencies of ocean spindrift and blown spray deposited on the land by all forms 

 of precipitation, has an influence on the chlorin content of inland ground 

 waters which is not limited to waters near the seaboard only but varies in 

 intensity with the distance from the seaboard. This influence is also modifled 

 by the configuration of the land surface and to some extent depends on the 

 direction of the prevailing winds from seaward. 



Except where beds of salt occur, chlorin in inland ground waters is not due 

 to the geological character of the water-bearing strata but is derived from the 

 sea. It is further concluded that the chlorin figure may be utilized as a pre- 

 liminary means of gaging the purity, or otherwise, of water samples from a 

 district where the normal chlorin content has been established. 



The location of water by means of the divining rod and automatic water 

 finder, G. B. Brooks {Queensland Agr. Jour., n. ser., 2 (1914), ^'o. 3, pp. 183- 

 193, figs. 8). — The author defends the divining rod and the automatic water 

 finder, claims the ability of locating underground water by them, and gives 

 experimental data to substantiate his claims. He states that the factors 

 affecting the results obtained by a divining rod are thi^nderstorms, atmospheric 

 moisture, and other weather conditions, proximity to growing timber, heavy 

 clay subsoil, and ironstone or other minerals, the time of day, and the physical 

 condition of the diviner. 



Rural water supplies, E. Babtow {Univ. III. Bui., 10 {1913), No. 36, pp. 79- 

 84, figs. 2). — A classification of rural water-supply samples examined by the 

 State Water Survey during the years 1907-1912, on the basis of their analyses 

 considered in conjunction with their source and the surroundings of the well, 

 is reported. The average number condemned decreased with the depth of the 

 well. This was true but to a less extent with samples collected from typical 

 wells. Many of the deepest wells were condemned owing to their mineral con- 

 tent. Three-fourths of the shallow wells examined were contaminated and 45 

 per cent of the samples of unknown origin were condemned. 



Information is given regarding the protection of shallow wells. 



SOILS— FERTILIZERS. 



Soil survey of Ashley County, Arkansas, E. S. Vanatta et al. ( U. 8. Dept. 

 Agr., Advance Sheets Field Operations of the Bureau, of Soils, 1913, pp. 5-39, 

 fig. 1, map 1). — This survey was issued March 13, 1914. It deals with soil 

 characteristics and crop adaptabilities of an area of 596,480 acres in south- 

 eastern Arkansas which is broadly divided into uplands and bottom lands. 

 The upland soils are both loessial and sedimentary. Although drainage is poor 

 in many cases, it is stated that " topographically practically the entire area of 

 the county is easily tillable." Twelve soil types are mapped, the Richland silt 

 loam being by far the most extensive. Agriculture is stated to be growing in 

 importance, but it is not yet well developed in the county. 



Soil survey of Bradford County, Florida, W. C. Btees et al. {TJ. S. Dept. 

 Agr., Advance Sheets Field Operations of the Bureau of Soils, 1913, pp. 36, 



