SOILS — FERTiLTZERS. 3l5 



till' fci'tilizor ri^iniii't'iiu'iits of soils in intensive atiricultnre and has the advan- 

 tage of beins nuich (|nicker than field experiments. 



The constituents of mineral soils; the analysis, classification, and prin- 

 cipal properties of clay soils, A. Atteuberg {Compt. Rend. Coiif. Internat. 

 A !l roil vol. [BiKhiiirst], 1 (I'JO'J), pp. 2S!)-301, fig. 1). — The essential points of 

 this article have already been noted from another source (E. S. R., 21, p. 106). 



Agricultural soils, B. N. Baker, W. B. Clark, and E. Hirsch iRpt. Con- 

 serv. Com. Md., 1908-9, pp. I'Ji-SU, pis. 2). — The various types of soils of the 

 Eastern Shore, southern and north central Maryland, Frederick Valley, Catoctin 

 Mountain and Blue Ridge, Hagerstown Valley, and the Appalachian region 

 are desi'rii)ed and their crop adai)tatii)iis explained. 



The chemical composition of some [Texas soils], G. S. Fraps {Texas Sta. 

 Bill. 125, pp. (J-!^'i, flil^- 1^) ■ — 111 continuation of [irevions work (E. S. R., 19, 

 p. 919), this bulletin reports the results of a chemical examination of soils from 

 Angelina, Brazoria, Cameron, Cherokee, Delta, Lamar, Hidalgo, Lavaca, Mont- 

 gomery, Nacogdoches, Robertson, Rusk, Webb, and Wilson counties, Texas. 



The results of the chemical analyses are in many cases checked by those of 

 pot experiments to test the actual fertility of the soils. The results are used 

 as a basis for the discussion of essentials of crop production, physical and chem- 

 ical deficiencies of soils, conservation of soil fertility, the value of chemical 

 ana.lysis and pot experiments in determining soil fertility, and the chemical 

 characteristics of Texas soil t.viies. 



Nitrogen and carbon in the virgin and fallowed soils of eastern Oreg'on, 

 C. K. Bradley {Jour. Indus, and Eiigin. Chem., 2 {1910), No. -}, pp. 138, 139). — 

 From the data reported the conclusion is drawn " that while the percentage of 

 nitrogen in these soils has remained practically constant under continual crop- 

 ping for, in extreme cases, 25 years, there has been a marked decrease in the 

 carbon or oi-ganie content." 



[Soils of Trinidad], P. Carmody {Ann. Rpt. Dept. Agr. Trinidad and Tobago, 

 1908-9, pp. J/l, -i?). — The general character of the soils of Trinidad is de- 

 scribed, and analyses with comments are given of an exceptionally rich humus 

 soil obtained from an old lagoon and of a soil on which sugar cane blighted 

 badly. The first was found to be unusually rich in phosphates and organic mat- 

 ter and poor in lime. It also contained a large amount of chlorin in the sub- 

 soil. The soil on which sugar cane blighted was found to contain an excess 

 of magnesia over lime. 



Analyses of soils of the Palazzo farm in Corticella, near Bologna, in the 

 experimental field for tile draining, I. Giglioli {Bol. Min. Agr., Indus, e Com. 

 [Rome], 8 {1909), kier. C, No. 11, pp. 28-30. pis. 10).— The results of analyses of 

 11 samples of soils taken at different depths and at different points in the field 

 are reported and discussed. 



Agronomic chart work in Bohemia, J. Kopecky {Compt. Rend. Conf. Inter- 

 nat. Agrogeol. [Budapest], 1 {1909), pp. 213-211). — A brief description is given 

 of the work done under government ausi)ices. 



Soil properties of the Kbros flood region, H. Ujj {Compt. Rend. Conf. Inter- 

 nat. Agrogeol. [Budapest], 1 {1900), pp. 2'i5, 2-'/6). — The injurious effect of ex- 

 cessive water in these soils is explained. 



Soil zones of Roumania, G. Munteanu-Murgoci {Compt. Rend. Conf. Inter- 

 nat. Agrogeol. [Budapest], 1 {1009), pp. 313-325, pi. 1). — The principal soil 

 zones are Itriefly described. 



Soil conditions in Norway, K. O. Bjorlykke {Compt. Rend. Conf. Internal. 

 Agrogeol. [Budapest], 1 {1909), pp. 115-122). — This article briefly discusses 

 the geological and agronomic classification and i)etrography of Norwegian soils. 



