28 REPORT OF THE AGRICULTURAL RESEARCH 



2. The investigation on soil moisture and water require- 

 ments of plants is being continued on lines which have 

 been sufficiently indicated in the memoirs. 



3. A joint investigation with Mr. Burt, Deputy 

 Director of Agriculture, United Provinces, is being con- 

 ducted into the causes of infertility in a tract of land in 

 the Mainpuri District. 



4. The effect of soil and manure on the composition of 

 crops is a branch of study which is engaging the attention 



of a number of investigators and is one on which I have 

 already obtained some information. It will be developed, 

 if possible, at Pusa during the coming year. 



5. Two points in relation to the Indian saltpetre manu- 

 facture, in respect of which it seems possible that an im- 

 provement can be suggested, will be investigated. 



6. Education. — This requires no special comment; it 

 will be conducted according to the lines laid down. 



Publications. — The following papers have been pub- 

 lished : — 



Memoir No. 8, "The Water Requirements of Crops in India" 



by Dr. J. Walter Leather. 

 Memoir No. 9, " The Nature of the Colour of Black Cotton 

 Soil " by Mr. H. E. Annett. 



