PREFACE. 



The experiments described iu the present paper have arisen 

 from some preliminary trials with Muzaffarnagar white, made at 

 Pusa, Muzaffarnagar and Lyallpur in 1907. Since that time they 

 have been considerably extended, and now embrace ten stations 

 and four very different classes of wheat. In addition, a large 

 amount of other work on the influence of the environment on quality 

 is being conducted in the Botanical areas at Piisa and Cawnpore. 



We desire to take this opportunity of expressing our indebted- 

 ness to several officers of the Indian Agricultural Department for 

 their valuable co-operation in the conduct of this work. For faci- 

 lities at Dumraon and Bankipore we are indebted to Mr. F. Smith, 

 B.Sc, Deputy Director of Agriculture, Bengal ; Mr. B. C. Burt, 

 B.Sc, and Dr. Parr, the Deputy Directors of Agriculture of the 

 United Provinces have assisted us at Orai and Aligarh respectively. 

 At Meerut, Babu Jugannath Pershad was good enough to give 

 us all facilities on his farm. Mr. Mahomed Hadi, M.R.A.C., has 

 kindly placed the resources of the Partabgarh Experiment Station 

 at our disposal while at Lyallpur, Messrs. W. Roberts, B.Sc, and 

 H. A. Corbin, B.Sc, have been good enough to assist in the work. 

 During the present year, Mr. G. Evans, B.A., Deputy Director of 

 Agriculture of the Central Provinces, has afforded us facihties at 

 Hoshangabad in the Narbada Valley. 



We are indebted to Dr. J. W. Leather, Imperial Agricultural 

 Chemist, for a large number of nitrogen determinations. 



In the milling and baking aspect of the subject we have been 

 fortunate enough to secure the invaluable assistance of Mr. A. E. 

 Humphries, formerly President of the National Association of 

 British and Irish Millers and a well-known authority on these 

 questions. 



Albert Howard. 

 H. M. Leake. 

 Gabrielle L. C. Howard. 

 Caavxpore, 

 December 18th, 1909. 



