PLATE XXVII 



Comparison of the number of sterile spikelets on bearded and beardless varieties 

 of wheat : 



On the left two heads of a bearded variety of wheat showing a large number of 

 sterile spikelets. On the right two heads of a beardless variety showing compara- 

 tively few sterile spikelets. Both varieties were gro-mi the same year under like 

 conditions of soil and treatment. 



