1020] SOILS FERTILIZERS. 419 



Kxperinicnt Station of ruorto BePtoni, riiraguay, during 1918, showing the 

 ahnorimil cold and its temporary and iieruianent effect upon ijlaut aud uuimal 

 life, are discussed at considerable length. 



SOILS— FERTILIZERS. 



The data of geochemistry, F. W. Clakke (U. S. Geol. Survey Buh 695 

 (1920), pp. 832). — This is the fourth edition, revised and enlarged, of this im- 

 portant \vorl< (E. S. R., 35, p. 16), dealing with the composition of the earth's 

 crust, waters, and atmosphere. " To bring some of the data together, to formu- 

 late a few of the problems, and to present certain general conclusions in their 

 modern form are the purposes of this memoir. It is not an exiiaustive mono- 

 graph upon geocliemisrry. but rather a critical summary of what is now known 

 and a gui'de to the more important literature of the subject." It contains data 

 of very great importance from the standpoint of agricultural science. 



Soil survey of Cass County, Ind., C. C. Beals (Proc. Incl. Acad. Sci., 1918, 

 pp. 186-20.'t).— This survey deals with the soils of an area of about 268,800 

 acres in north central Indiana. The topography varies from level to undulating 

 and broken. The soils are classed as upland and alluvial soils. Including 

 meadow and muck, 14 soil types of 5 series are discussed. 



Analyses of one hundred soils in Allen County, Ind., R. H. Care and 

 V. R. Phakks {Proc. Ind. Acad. ScL, 1918, pp. 151-159, figs. Jf). — Analyses of 

 samples of 100 soils of the county are reported and discussed. The soils 

 are of glacial origin, 70 per cent belonging to the Miami series and 18.5 per 

 cent to the Clyde series. 



It was found ttat there are many soils of this county quite high in organic 

 matter, only 11 per cent containing below 4 per cent, while 45 per cent range 

 from 4 to 7 per cent ; 37 per cent range from 7 to 15 per cent ; and 6 per cent 

 are above that amount. They contain considerable nitrogen, but are some- 

 what deticient in phosphoric acid and very deficient in lime, 55 per cent being 

 acid to litmus. 



Report on Coastal Plain soils, particularly with reference to their na- 

 ture, plant food requirements, and suitability for different crops, C. B. 

 AViLLiAMs, W. E. HE.VRN, W. F. PATE, J. K. Pltjmmer, and E. C. Blair (Bui. 

 X. C. Dept. Agr., 39 (1918), No. 5, pp. 115, figs. 7).— This report contains the 

 results of (1) a survey showing the location and extent of different soil types 

 in the Coastal Plain section of North Carolina, (2) analyses of the soils to 

 show their content of plant nutrients, and (3) tield experiments to determine 

 the fertilizer and cultural requirements of the more important types. The 

 Coastal Plain region of North Carolina covers an area of about 11,814,700 

 acres, the topography of which varies from level, flat, to gently rolling and 

 rolling. "The natural drainage depends largely upon the topography. The 

 soils are sedimentary in origin. The Norfolk series of soils is the most com- 

 plete series in the State, and occupies from two-thirds to three-fourths of all 

 the upland areas of the Coastal Plain region. 



The analyses indicate that while there is considerable variation in the total 

 amount of plant food contained in the different types, excepting the peats, 

 mucks, and other soils containing large amounts of organic matter, these soils 

 are particularly low in nitrogen and phosphoric acid. Potash was found to be 

 contained in rather high amounts in most of the soils occurring in the Albe- 

 marle section of the State. Especially was this so with the soils in those 

 counties occurring beyond Albemarle Sound. Lime is usually present in the 

 Coastal Plain section of the State In only small amounts and in available forms. 



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