264 POWER OF THE SOIL TO ABSORB SALTS [chap. 







Fig. i6. 



10 



20 30 



Lbs. of Nitrogen per acre 



40 45 



-Losses of Nitrogen in Drainage from Rothamsted Wheat Plots. 



Black = Losses in Summers 1879, 1S80. 

 Shaded = Losses in following Winters. 



