T. C. Broyer 245 



close relationship between these two processes (see also 25). The shape 

 of the distribution curve for adsorption exchange along the same types 

 of barley roots may be slightly different. Curves of this sort are repre- 

 sented in Figures 26A, 26B, 27A, and 27B, from Overstreet and Jacob- 

 son (j5> 56). These show the differential adsorption pattern of various 

 anions and cations in short time experimental treatments. 



The salt distribution pattern in the plant as a whole will depend on 

 many interrelated factors including relationships between shoot and 

 root, organ and organ, tissue and tissue, and among cells of like type; 

 for the plant is an integrated machine, the process in any one part being 

 dependent upon the concurrent and past action and conditions in every 



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Figure 27B. These graphs are discussed under Fig- 

 ure 27A. — Jacobson and Overstreet ( 35) 



