WHEAT TREATED WITH FORMALDEHYDE 375 



meiit was not planned for at the time the experiment was started, 

 the results show that an extension of time would give a graph 

 similar to the temperature curve of Lehenbauer^ for corn and the 

 life phase curve of Buchanan® for a bacterial culture. But as this 

 is beyond the scope and province of the present studies it is advis- 

 able to postpone the submission of possible reactions until definite 

 data have been obtained. 



From the results presented in this paper it is evident : 



1. That the absorption in the case of wheat seed placed in con- 

 tact with foraldehyde in the usual concentration for treating seed 

 to prevent smut is not materially different from wheat seed placed 

 in water for the same period of time. 



2, Wheat seed soaked in a formalin solution for ten minutes 

 and kept enclosed for varying periods from one to thirty-six hours 

 does not show any impaired germination until after twenty-six 

 hours. 



"Lehenbauer, P. A., Growth of maize seedlings in relation to temperature: 

 Physiol. Researches 1: 247-288. 1914. 



"Buchanan, R. E., Life phases in a bacterial culture : Jour. Infect. IJis 

 23: 3-19. 1918. 



lowA State College, 

 Ames, Iowa. 



