PLATE 39 



Seedlings grown in water, sand, and clay, showing effects of (i) distilled water, 

 (2) 500 parts per million sodium-chlorid solution, (3) 1,000 parts per million sodium- 

 chlorid solution, (4) 1,500 parts per million sodium-chlorid solution, (5) 2,000 parts 

 per million sodium-chlorid solution, (6) 3 ,000 parts per million sodium-chlorid solution, 

 and (7) 4,000 parts per million sodium-chlorid solution. 



