CONTENTS. 



I. Introduction 



II. Felted and smooth chaff 



III. Grain colour and chaff colour 



IV. Presence and absence of awns 

 V. Other characters 



VI. Summary and conclusions . . 



Page. 



1 

 7 

 20 

 29 

 37 

 41 



VII. Description of the wheats used in the hybridization experiments 47 



