213 



Fig. 7. 



Epidermis, blade of com. 

 Epidermis .Corn grown under normal conditions jubjected to drought 

 showing turgoscent cells. 



flg.9. 



Epidermis _ Castor t>ean. 

 5-Under normal conditions. 

 b-Subjeoted to drought. 



Pig. 10. 



Bpidem^s oC Cucumber. 

 a-Onder normal conditions* 

 ■b-Subjecied to irought. 



15 



