l2 REPORT OF THE AGRICULTURAL RESEARCH 



exhibitions and shows. This series will be continued and 

 will cover silk, lac, bees and beneficial insects. 



The best methods of preparing exhibits of injurious 

 insects for shows are also being tested with a view to find 

 out the class of exhibits that most appeal to the public. 

 Further, a series of lantern slides in colour are being pre- 

 pared in order that lantern lectures may be given at such 

 shows. 



Mr. Hewlett, Second Imperial Entomologist, arrived 

 at Pusa in December 1907. He has undertaken the in- 

 vestigation of those biting flies of whose habits little or 

 nothing has been hitherto known in India. With a view 

 to obtain materials for this enquiry, sets of apparatus and 

 copies of the bulletin on biting flies, have been issued to 

 persons and associations likely to render help. In this 

 connection Mr. Hewlett is in complete touch with special 

 officers of the medical and veterinary departments. He 

 arranged in February 1909 an exhibition of all kinds of 

 blood-sucking and parasitic insects for the pathological 

 section of the Bombay Medical Congress, and read a paper 

 on the habits of sand flies. He has ascertained the life- 

 histories of nearly all the mosquitos which occur in Pusa, 

 and has found two species of fish which are capable of 

 destroying large numbers of anopheles larvae. A report 

 on the natural enemies of mosquitos was furnished to the 

 Director of Agriculture, Bengal. 



A comprehensive investigation of the several species 

 of fruit flies which attack mangoes, peaches, etc., is in pro- 

 gress. The life-histories of several of these have been 

 worked out, and methods of destroying the mango fly have 

 been tested with success. An attempt to check the annual 

 attack of these pests on the peaches grown at Pusa, was so 

 far successful this year that the period of severity was 

 postponed; thus the Imperial Economic Botanist was able 

 to complete certain experiments. 



Mr. Froggatt, Entomologist to the Government of New 

 South Wales, visited Pusa in June 1908, to obtain informa- 



