SOILS AND THEIR PROPERTIES 85 



Leather, " The Agricultural Ledger," 1898, No. 2, p. 22. " The Water 

 of the Soil," p. 10. (Government Printing Office, India.) 



Hall and Miller, " The Effect of Plant Growth and of Manures upon 

 the Retention of Bases by the Soil," Proc. Royal Soc., B, vol. 77, 1905, p. 30. 



Hall, Brenchley, and Underwood, " The Soil Solution and the Mineral 

 Constituents of the Soil," Journ. Agric. Science, vi., p. 278. 



Collins, " Scheibler's Apparatus for the Determination of Carbonic 

 Acid in Carbonates," Journ. Soc. Chem. Ind., 1906, p. 518. 



Collins, " Agricultural Chemistry for Indian Students," p. 44. (Govern- 

 ment Printing Office, Calcutta.) 



Russell and Appleyard, " The Atmosphere of the Soil ; its Composition 

 and the Causes of Variation," Journ. Agric. Science, vii., i. 



Schreiner, Journ Phys. Chem., 1906, p. 258. 



Dyer, " A Chemical Study of the Phosphoric Acid and Potash Contents 

 of the Wheat Soils of Broadbalk Field, Rothamsted," Proc. Roy. Soc., 1907, 

 p. ii. 



Miller, " The Amount and Composition of the Drainage through Un- 

 manured and Uncropped Land, Barnfield, Rothamsted," Journ. Agric. 

 Science, i., p. 377. 



Russell, " Washing-out of Nitrate from Arable Soil during Past (1915-16) 

 Winter," Journ. Board of Agriculture, 1916-17, p. 22. 



Lawes and Gilbert, " The Rothamsted Experiments." 



Gilchrist, " Guide to Experiments," 1917. (Ward, Newcastle.) 



Hall and Amos, "The Determination of Available Plant Food," 

 Journ. Chem. Soc., 1906, T. 205. 



