346 APPENDIX II 



La wes, Gilbert, and Warington. /. R. Ag. Soc, E., 2nd s., 



19(1883). 

 Winogradsky. Compt. Rend., 113(1893), 116. 

 Deherain. Ann. Agron., 19, 409. 

 King. Wisconsin Ag. Exp. Station Annual Reports, 17 (1900J, 



18 (1901). 

 Russell./. Agric Set., 19 14, 6, 18. 



Denitrification. 

 Gayon and DUPETIT. Compt. Rend., 95 (1882), 644. 

 Wagner. D. Landw. Presse, 1895, I2 3- 

 Warington./. R. Ag. Soc, E., 3rd s., 8. 

 Stoklasa. Cent.f. Bakt., 7 (1901), 260. 



Mycorhiza. 

 Stahl. Jahrb.f. wiss. Botanik., 34. 



Protozoa. 

 Russell and Hutchinson. /. A gric. ScL, 1909, 3, in; 1913, 

 5, 152. 



Absorption of Salts by Soil. 

 Way./. R. Ag. Soc, E., 1st s., n, 323 ; 13, 123. 

 Voelcker. /. R. Ag. Soc, E., 1 st s., 21 (i860), 93 ; 25 (1864) 333. 

 Voelcker. /. R. Ag. Soc, E., 2nd s., 10 (1874), 132. 

 Lawes, Gilbert, and Warington./. R. Ag. Soc, E., 2nd s., 



XVII. (1881), 241 ; XVIII. (1882), 1. 

 Bemellen. "Absorption von wasser durch Thon," Zeit. anorg. 



Ch., 1904, 12, 314. 

 RUSSELL. British Association Second Report on " Colloid 



Chemistry," 1919. 



Alkali Soils. 

 HlLGARD U.S. Dep. of Agric. Year-Book, 1895, 103. 

 HlLGARD. Univ. of California Ag. Exp. Sta., Bull. 128 (1900). 

 WlLLCOCKS. Egyptian Irrigation, 2nd ed. 



Soil Surveys, etc. 

 Schimper, A. F. W. Pflanze?i Geographic, Jena, 1898. 

 U.S. Dep. of Agric, Div. of Soils, "Field Operations," 1901. 

 Whitney. "Tobacco Soils," U.S. Dep. of Agric, Bull. 11, 1898. 

 Veitch. " Maryland Soils," Maryland Ag. Exp. Sta., Bull. 70, 



1901. 

 Hall and Russell. "Agriculture and Soils of Kent, Surrey, 



and Sussex," Board of Agric. and Fisheries, 191 1. 



