PREFACE. 



The material made use of in the preparation of this Memoir has 

 been gathered from observations made at the Nagpur Farm, and 

 the information suppHed by the District Officers of the Central 

 Provinces and Berar. To these officers I desire to tender my 

 sincere thanks for their unfailing kindness in collecting information 

 and specimens. Without their assistance it would have been well 

 nigh impossible to bring together a satisfactory collection of rices. 



The paragraph on ' Rice Soils ' was written by Mr. F. J. 

 Flymen, Agricultural Chemist, C. P. To him my best thanks are 

 due for permission to include the note in the present publication. 



R. J. D. GRAHAM, 



Nagpur, Economic Botanist, C. P. 



July 1913. 



