J. VaKGA.S EvKK AM> Ct. S.MITII 



197 



imported seed and the correspond insf crop raised from the solect(!d seed, 

 it was at once apparent that an increase in tlie lieight had been brought 

 about by selecting for tallness and the crops from the selected seed 

 presented a greater degree of uniformity. The actual amount of the 

 increase was found to vary with the different samples. In the case of 

 one of the .samples brought from Pskoff and anothci' from the Province 

 of Livonia an increase of nearly ten inches was manifest. In other cases 

 the increase was not so marked, while with seed procured from the 

 region of Minsk no increase in the height was noticeable. 



With regard to tillering our efforts have not proved so successful. 

 The accompanying figures represent some of the results obtained and 

 are arrived at by taking some five hundred plants at random from the 

 parent plots and a similar number from the selected plots, and counting 

 those which had tillered and those which had not at the time of 

 flowering. 



Percentage of plants which tiUereil 



Although the proportion of plants which tiller to those which do not 

 has been reduced considerably, it appears that local conditions of soil 

 play such an important part in conditioning this manner of growth that 

 it would appear doubtful whether much more can be done in this 

 direction. 



Our thanks are due to Professor Batesonfor guidance and assistance 

 in several p;irts of this work. 



