616 EXPERIMENT STATION RECORD. 



placed about 20 ft. from the ground, which for some distance around is lawn 

 and shrubbery. It is approximately GO by 30 in. The water as it falls is con- 

 ducted from the bottom of the basin by means of a glass tube into a glass jar, 

 from which the sample for analysis is taken at the end of each rainfall." 



Nitrogen and chlorin in rain and snow, W. K. Knox (CJiem. Neios, 111 

 (1915), ^A'o. 2880, pp. 61, 62). — In continuation of previous studies by "Wiesner 

 (E. S. 11., 30, p. 815) the author reports determinations of the nitrogen and 

 chlorin content of 3G samples of rain and 7 of snow collected at Mount Vernon, 

 Iowa, from October 4, 1913, to June 12, 1914. The snowfall during the period 

 amounted to 11.5 in., equivalent to 0.95 In. of rain. The rainfall was 17.75 in. 



It is estimateil from the determinations that the total precipitation during 

 the period named carried down to the soil 3G.85 lbs. of chlorin per acre, 1.54 

 lbs. of nitrates. 0.01 lb. of nitrite. 3.09 lbs. of free ammonia, 2.79 lbs. of 

 albuminoid aminonia, and 0.13 lb. of suliihate. 



SOILS—FEKTIUZERS. 



Soil survey of Goodhue County, Minnesota, W. G. SMixf^ kt al. (U. 8. 

 Dept. Agr., Advance Sheets Field Operations Bur. Soils, 1913, pp. 3Jf, fig. 1, 

 map 1). — ^This survey, issued February 3, 1915, deals with an area of 490.880 

 acres in southeastern Minnesota, consisting of rolling to hilly upland which 

 drains eastward into the Mississippi River. The soils of the area consist 

 mainly of dark brown to black silt loams with relatively small areas of stony 

 gravelly soils, and are grouped naturally into upland, high river terraces, and 

 overflow bottom land. Twenty-five soil types of ten series and two miscellane- 

 ous types are mapped. The Knox silt loam, covering 43 per cent of the area, is 

 the most important and extensive upland t3'pe, the Waukesha silty clay loam 

 is the most extensive river terrace tyi^e, and the Wabash soils are the most 

 important of the botttom land types. It is fetated that an excessive acreage in 

 small grain and too little in clover has materially reduced the producing power 

 of the naturally strong soils of the county and that a I'eorganized cropping 

 practice is necessary. 



The soils of Pennsylvania, C. F. Shaw {Pennsylvania 8ta. Bui. 132 {191Jf), 

 pp. 209-2^2, fig. 1). — This bulletin summarizes the results of a reconnoissance 

 survey of the soils of Peimsjivania made by the Bureau of Soils of this Depart- 

 ment in cooperation with the Pennsylvania State College. 



The State is naturally divide<l into three physiographic sections. The first 

 lies east and south of Blue Mountain and has a generally rolling to hilly 

 topography. The second lies between Blue ^Mountain and the Allegheny escarp- 

 ment and consists of a succession of mountain ridges and valleys. The third 

 lies west and north of the Allegheny escarpment and has a topography varying 

 from rolling to hilly and mountainous. 



Seventy-four per cent of the soils of the State are residual in origin, 22 per 

 cent are glacial, and 4 per cent are alluvial and lacustrine. The soils are 

 classed in seven provinces and forty-seven series. The Dekalb series is the 

 most extensive, covering 43.5 per cent of the State, and the Volusia series is 

 second, covering 19.4 per cent of the area. Each soil series is briefly discussed 

 with reference to extent, distribution, general characteristics, and crop adapta- 

 bilities. 



Soil survey of Orangeburg County, South Carolina, J. H. Agee et al. ( V. 8. 

 Dept. Agr., Advance Sheets Field Operations Bur. Soils, 1913, pp. 39, fig. '/, 

 map 1). — This survey, issued February 16, 1915, deals with an area of 702,720 

 acres In south-central South Carolina, the topography of which ranges from 



