REFERENCES 223 



26. Shutt, F. T., and Smith, E. A. The Alkali Content of Soils as Re- 



lated to Crop Growth. Trans. Roy. Soc. (Canada), Ser. Ill (1918), 

 XVII. 



27. Smith, J. G. Forage Plants for Cultivation on Alkali Soils. U. S. 



L). A. Yearbook (1898), pp. 535-55- 



28. Tottingham, W. E. A Preliminary Study of the Influence of Chlorides 



on the Growth of Certain Agricultural Plants. Jour. Am. Soc. Agr. 

 11 (1919), pp. 1-32. 



29. Traphagen, F. W. The Alkali Soils of Montana. Mont. Sta. Bui. 



54 (1904). PP- 93-121. 



