SUMMARY. 19 



(4) When the amount of sodium chlorid present is much below 

 the minimum concentration that is injurious under field conditions 

 no perceptible modifications of the plant structure occur. 



(5) Leaves of wheat detached from plants grown in nonsaline soil 

 on which the bloom was not conspicuous lose by transpiration two 

 to three times as much moisture in the same length of time as Leaves 

 from plants grown in a soil containing 1.5 per cent of total salts 

 (about 1 per cent of sodium chlorid) and which possessed a marked 

 development of bloom. 



(6) Wheat plants grown in soils containing naturally 0.09 and 

 0.12 per cent of total salts (0.06 and O.OcS per cent of sodium chlorid) 

 show an increased transpiration as compared with plants grown in a 

 nonsaline soil. Of the two saline soils, that containing the smaller 

 concentration of salts induced the heavier transpiration. 



134 



