for the years 1917-20. v 



As all the resident Honorary Correspondents on the first list have 

 since left India, to our great loss, and are not likely to return, their 

 names have been transferred to the roll of non-resident Honorary 

 Correspondents 



Lieutenant-Colonel F. Wall, I.M.S., was appointed a resident honor- 

 ary correspondent in September, 1919, and Dr. F. H. Gravely, Superin- 

 tendent, Government Museum, Madras, in March, 1920. 



In September, 1916, I drew up at the request of the Hon'ble Sir 

 Sankaran Nair, Kt., CLE., then Member for Education in the Imperial 

 Council, and after consultation with professors of zoology and others 

 in all parts of India, a scheme for the appointment of research assist- 

 ants in the Zoological Survey. This scheme was accepted with slight 

 modifications by the Government of India, but could not be brought 

 into force until some time after the conclusion of the war. Its essential 

 point was that young Indian graduates who had already given proof 

 of special zoological ability should be attached for a limited period 

 to scientific officers engaged in original research in the capacity of 

 personal assistants, and should accompany these officers on tour and so 

 far as possible occupy towards them the position that an Indian chela 

 occupies towards his yuru. 



The first two assistants appointed under this scheme, Messrs. Sunder 

 Lall Hora and Gautam Sondhi, were both M.Sc. graduates of the Punjab 

 University and old pupils of the Government College, Lahore, in which 

 Lieutenant-Colonel J. Stephenson, CLE., I.M.S., has established a 

 flourishing school of zoological research. 



Mr. Sondhi was unfortunately obliged by ill-health to give up his 

 assistantship in a few weeks and was succeeded by Mr. Amin-ud-Din, 

 also an M.Sc. of the Punjab University and an old pupil of the Govern- 

 ment College, Lahore. 



It is too soon as yet to report on the permanent success of the 

 scheme, but T may say that excellent work is being done by the assist- 

 ants, whose duties are by no means confined to mere mechanical help 

 in research work. 



Touring and Field Work. 



As the greater number of the tours undertaken by members of the 

 department since the latter part of 1918 have been more or less directly 

 connected with a special line of investigation, namely a biological 

 survey of the freshwater molluscs of the Indian Empire and their tre- 

 matode parasites, I shall deal with the field-work involved in this inves- 

 tigation first, and will discuss all the tours carried out in connection 

 with it together. 



It was not until towards the end of the war that I was able to 



Biological Investi- Persuade the Government of India to make any 



gations ^on the fresh= military use of the special knowledge of zoologists 



water molluscs of the officially employed in the country as such. In 



mpire. ^^^^ -^^-^^^ however, I arranged to undertake 



investigations on the purely biological aspect of the inland fisheries 



