PLATE 71 



Effect of formalin i to 400 treatment for 6 hours, with and without 6-hour presoak: 



1. Fulcaster wheat; A, control, 71 per cent germination; B, seeds presoaked 6 hours, 

 then formalin i to 400 for 6 hours, 83 per cent germination ; C, seeds treated with form- 

 alin I to 400 for 6 hours, not presoaked, 54 per cent germination, plants dwarfed. 



2. Turkey wheat: A, control, 61 per cent germination; B, seeds presoaked 6 hours 

 then formalin i to 400 for 6 hours, 68 per cent germination; C, seeds treated with form- 

 alin I to 400 for 6 hours without presoaking, 50 per cent germination, plants dwarfed. 



