INSTITUTE, PUSA, FOR 1917-18 121 



REPORT OF THE IMPERIAL AGRICULTURAL 



BACTERIOLOGIST. 



(C. M. Hutchinson, B.A.) 



I. Administration. 



I held charge of the Section throughout the year. 



Mr. J. H. Walton, Supernumerary Agricultural 

 Bacteriologist, continued to be on military duty throughout 

 the year. 



II. Training. 



Mr. S. N. Bose, Bacteriological Assistant to the Agricul- 

 tural Chemist to the Government of Bengal, was under 

 training in this Section from 3rd January, 1916. He 

 finished his course and was relieved from this Section on 

 the 6th January, 1918. 



Mr. Kripa Ram, a student from Punjab, was under 

 training, specially in media preparation, in this Section 

 for a short period from 25th September to 18th October, 

 1917. 



Mr. P. C. Chaudhury, Superintendent of Sericulture, 

 Bengal, was under training in bacteriological technique in 

 connection with the silkworm disease, from 6th to 17th 

 December, 1917, and 6th to 19th February, 1918. 



Mr. K. L. Mahta, a student from Kashmir State, was 

 under training in the microscopic technique in connection 

 with the silkworm disease, from 15th March to 30th June, 

 1918. 



Work was done on the following subjects : — 



III. Soil Biology. 



Nitrification. Further observations were made as to 

 the conditions determining maximum nitrification in vari- 

 ous types of Indian soils Field observations of the sea- 

 sonal variation and the effect of cropping and of fallow 

 were continued. It was found that the presence of a crop, 



