PLATE 45 



A. — Seedlings grown in sand watered with (i) 4,000 parts per million sodium -chlorid 

 solution and (2) 4,000 parts per million sodium-chlorid solution + 30 parts per million 

 of calcium sulphate. 



B. — Seedlings grown in (i) 4,000 parts per million sodium-sulphate solution, (2) 

 4,000 parts per million sodium-sulphate solution -(- 30 parts per million of calcium 

 sulphate, (3) 4,000 parts per million sodium-sulphate solution + 30 parts per million 

 of calcium oxid, (4) 4,000 parts per million sodium-sulphate solution + 30 parts per 

 million of magnesium sulphate, and (5) 4,000 parts per million sodium-sulphate 

 solution -f 30 parts per million of barium chlorid. 



