Nov. 4, i9i8 Soil Factors Affecting the Toxicity of Alkali 



309 



Table III . — A verage dry matter (in o.oooi gm.) produced in loam soil maintained at differ- 

 ent moisture contents and containing sodium chForid, sodium carbonate, and sodium 

 sulphate in various concentrations based on the dry weight of the soil 



Table IV. — Average dry matter {in 0.0001 gm.) produced in loam soil maintained at differ- 

 ent moisture contents and containing sodium chlo rid, sodium carbonate, and sodium sul- 

 phate in various concentrations based on the theoretical strength of the soil solution 



