214 THE BOTANICAL MAGAZINE. [Vol. xxxn. No. m. 



Accepting the writers' view, the results obtained by Miyazawa in 

 F2 and F3 as well as in back-crossing may be entirely simplified and 

 well understood ; the grain color in question is transmitted by xenia, 

 representing the dominance of blueness. 



Agricultural College 



Tokyo Imperial University, 

 July, 1918. 



After this paper was written, the writers became aware of a note on the same 

 subject by S- Takeda in his Japanese book lOn the races of the barley and the 

 wheat. 1917.) He has recognized the phenomena as a case of xenia, without detec- 

 ting the proper ratio. 



