PLATE 53 

 Effect of wilting on ability of small grains to survive low temperatures: 



Flask I 

 Flask 2 

 Flask 3. 

 Flask 4. 

 Flask 5 

 Flask 6 



— Exposed to air for 2.5 hours previous to freezing. 

 — Exposed to air for 1.5 hours previous to freezing. 

 — Exposed to air for i hoiu- previous to freezing. 

 — Exposed to air for 0.5 hour previous to freezing. 

 — Not exposed to the air previous to freezing. 

 — Exposed to the air for 2.5 hours, but not frozen. 



