PLATE 44 



A. — Seedlings grown in (i) distilled water, (2) 4,000 parts per million sodium-chlorid 

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

 chlorid solution + 30 parts per million of calcium oxid, (4) 4,000 parts per million 

 sodium-chlorid solution + 30 parts per million of magnesium sulphate, and (5) 4,000 

 parts per million sodium-chlorid solution -}- 30 parts per million of barium chlorid. 



B. — Seedlings gro\\Ti in (i) distilled water, (2) 4,000 parts per million sodium-chlorid 

 solution + 30 parts per million of potassium chlorid, (3) 4,000 parts per million sodium- 

 chlorid solution + 30 parts per million of sodium nitrate, (4) 4,000 parts per million 

 sodium-chlorid solution + 30 parts per million of sodium phosphate, (5) 4,000 parts 

 per million sodium-chlorid solution + 30 parts per million of ferric chlorid, and (6) 

 4,000 parts per million sodium-chlorid solution + 30 parts per million of potassium alum. 



