510 EXPEEIMENT STATION RECORD. 



On the measurement of dew, F. Ebedia {Agr. Colon. [Italy'\, 9 (1915), No. 12, 

 pp. 105-11 Jf, pis. 2, figs. 2). — Improved methods and apparatus for measuring 

 dew are described. 



The specific density of snow, F. Wenglee (Die spezifiscJie Dichte des Schnees. 

 Inang. Diss., Friedrich-Wilhelms Univ., 1914, PP- 86; abs. in Wasser ii. Ahtcasser, 

 9 (1915), No. 15, p. 520). — This is an inaugrural dissertation dealing with the 

 methods and results of the determination of the density of snow as affected 

 by varying conditions of temperature, wind, depth, age, etc. The literature of 

 the subject is fully reviewed with numerous references. 



Swedish meteorological observations. 1912 and 1913 (Met. lakttag. Sverige 

 (Ohserv. Met. SuM.), K. Svenska Tetcnsk. Akad., 54 (1912), Bitiang. pp. 71, 

 pis. 30; 55 (1913), pp. 157). — ^These are the usual meteorological summaries of 

 observations made under the direction of the Central Meteorological Institute 

 of Sweden. 



Rainfall observations, compiled by K. Diem (Bui. Deli Proefstat. Medan, 

 No. 6 (1915), pp. V+640). — This is a compilation of rainfall observations since 

 1875 at various places, especially on the east coast of Sumatra. 



The relation of rainfall to the water supply for human consumption, 

 industry, and agriculture, Gkohmann (Stcht die Xicdcrschlapsmcnge noch im 

 Einklange mit dcin Wasserverbj-auch der Bevolkerung, Industrie, vnd Land- 

 tcirtschaftf Leipsic: Schr. Ockonom. Gesell. Konigrcich Sachscn [1914], pp. 15, 

 fig. 1). — The water supply is discussed in its relation to rainfall, evaiwration, 

 drainage, and run-off, assuming that each of the three latter accounts for one- 

 third of the rainfall. The discussion is based in large part on rainfall and 

 ground water measurements at Leipsic, Dresden, and Freiburg, the data for 

 Dresden covering the period from 1SG7 to 1906. 



Observations on lightning strokes, Joseph (.illg. Forst u. Jagd Zig., 91 

 (1915). .luhj, pp. 165-170). — Data regarding lightning strokes in Hesse during 

 1914, with special reference to the relative amount of damage done to different 

 kinds of trees, are presented and discussed in this article. 



SOILS— lERTILIZERS, 



Soil survey of Tattnall County, Georgia, A. K. Taylor, T. D. Rice, C. Van 

 DuYNE, and E. H. Stevens (U. S. Dipt. Agr., Advance Sheets Field Operations 

 Bur. Soils, 1914, pp. 4S, fid- 1, map 1). — This survey, made in cooperation with 

 the Georgia State College of Agriculture and issued December 27, 19ir», deals 

 with the soils of an area of 382,080 acres in southeastern Georgia, the surface 

 of which varies from flat to rolling. "The greater part of the county is well 

 drained, but there are extensive poorly drained stretches in the upland as well 

 as on the terraces and in the stream bottoms." 



The soils of the county are of sedimentary and alluvial origin. Including 

 swamp and peat, 27 soil types of 12 series are mapped, of which the Tifton 

 sandy loam and fine sandy loam are considereil the strongest and most pro- 

 ductive types. The Tifton sandy loam is the most extensive single type, with 

 the Norfolk sandy loam and sand second and third in extent. 



Soil survey of Clinton County, Indiana, W. E. Thabp, R. H. Peacock, and 

 C. M. Rose (U. S. Dcpt. Agr., Advance Sheets Field Operations Bur. Soils. 1914, 

 pp. 28, fig. 1, map 1). — This survey, made in cooperation with the Indiana 

 Department of Geologj- and issued December 30, 1915, deals with the soils 

 on an area of 254.720 acres in north-central Indiana, the surface of which varies 

 from gently undulating to moderately rolling. " The soils are derived from a 

 comparatively shallow surface layer of silty material, usually less than 3 ft 

 deep, overlying bowlder clay of great depth." Including three miscellaneous 



