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seed remain capable of development through the period of tivo years. This result justifies 

 the assumption that the capacity for development can last even as long as, perhaps, much 

 longer, than the germinating capacity of the seed itself. To continue the experiments further 

 in this direction would have only scientific and no practical value, since seed more than two 

 years old is never used in practice. 



A second subordinate question must not remain unanswered here which is furnished by 

 the external, almost complete, correspondence between the loose smut of wheat and of barley. 

 The question, namely, do two different forms exist here or is the same smut concerned in the 

 attacks on the Hordeaceae, that is Hordeum and Triticum? The detailed cross-infection of 

 barley smut on wheat blossoms and wheat smut on barley blossoms has not yet given sufficiently 

 convincing results. It is,_however, not impossible that the very dry summer of the preceding 

 year influenced the infection of the blossoms. Experiments have been begun again from the 

 beginning and it should be possible later to report results concerning this. 



