REFERENCES 151 



Very little attention has been given to the effect of the 

 different alkalies on the physical conditions of field soils; 

 consequently, it is not known whether or not the rate of 

 movement of salts under field conditions is checked by 

 washing the salts out of the soil as in the above laboratory 

 experiments. The last-mentioned experiment apparently 

 indicates that when the salts are mixed, as under field 

 conditions, the deleterious action of the neutral salts is 

 not so great as under the laboratory mixing conditions. 



REFERENCES 



1. BEESON, J. L. The Physical Effects of Various Salts and Fertilizer 



Ingredients upon a Soil as Modifying the Factors which Control 

 its Supply of Moisture. Jour. Am. Chem. Soc. 19 (1897), pp. 624- 

 649. 



2. BRIGGS, L. J., and LAPHAM, M. W. Capillary Studies and Filtration 



of Clay from Soil Solutions. U. S. D. A. Bur. Soils, Bui. 19 (1902), 

 40 pp. 



3. CAMERON, F. K., and PATTEN, H. E. The Removal of Black Alkali 



by Leaching. Jour. Am. Chem. Soc. 28 (1906), pp. 1639-1644. 



4. DIMO, N. A. Influence of Irrigation and of Increased Natural Hu- 



midity on the Process of Soil Formation and of the Transportation 

 of Salts in the Soils and Subsoils of the Golodnoi (Hungary) Steppe. 

 Russ. Jour. Exp. Landw. 15 (1914), pp. 136-138. (Abs. E. S. R. 34, 

 p. 16.) 



5. DORSEY, C. W. Accumulation of Alkali in Soil. U. S. D. A. Bur. 



Soils, Bui. 55 (1906), pp. 13-18. 



6. DORSEY, C. W. Reclamation of Alkali Land in Salt Lake Valley, 



Utah. U. S. D. A. Bur. Soils, Bui. 43 (1907), 28 pp. 



7. HANSEN, D. Experiments in the Production of Crops on Alkali 



Land on the Huntley Reclamation Project, Montana. U. S. D. A. 

 Misc. Bui. 135 (1914), 19 pp. 



8. HARE, R. F., et al. Preliminary Tank Experiments on the Movement 



Changes in Composition and Toxic Effect on Wheat of Certain 

 Salts in Sandy Loam and Adobe Soils. N. Mex. Sta. Bui. 88 (1913), 

 32 pp. 



9. HARRIS, F. S. The Movement of Soluble Salts with the Soil Moisture. 



Utah Sta. Bui. 139 (1915), pp. 119-124. 



10. HARRIS, F. S., and ROBINSON, J. S. Factors Affecting the Evaporation 

 of Moisture from the Soil. Jour. Agr. Res. 7 (1916), pp. 439-461. 



