INSTITUTE AND COLLEGE, PCSA, FOR 1911-12. 9 



resembling Sereli and occurring on the Jorhat Farm in 

 Assam, the Betelnut Pahn disease, the Indigo disease and 

 other diseases, connected with tea, cotton and coffee, as well 

 as diseases of forest trees, have engaged the attention of 

 this section during the year. 



A very large amount of systematic work has also been 

 done, and some hundreds of specimens, of plant parasites 

 for the most part, have been added to the named herbarium 

 collection. Two ^^arts of the list of Indian fungi were pre- 

 pared in collaboration with Messrs. H. and P. Sydow of 

 Berlin, and published — containing some 300 species of 

 Indian fungi, of which more than a hundred were new to * 

 science. 



7. Entomology. — In Madras a campaign has been car- 

 ried out against the Deccan Grass-hopper. The method 

 known as " bagging "" was adopted, more or less successfully, 

 and the ploughing of infested lands was carried out. 

 Besides this a leaflet was issued in English, and in the verna- 

 cular, giving a description of the methods to be adopted 

 against this pest. Experiments against White Ants were 

 continued in the Central Provinces. The application of 

 kerosene oil was found most effective in dealing with the 

 mound-building variety of termites. The collection and 

 despatch to tlie Punjab of parasites of ihe cotton boll-worm 

 formed an important aspect of the work of the section, as 

 dependence is placed upon this parasite in order to keep in 

 check the ravages of the insect. This method of controlling 

 this pest is being adopted in Egypt, and parasites have 

 recently been sent to that country for this purpose. A 

 leaflet has been issued in the vernacular explaining how this 

 remedy should be used. In the United Provinces measures 

 have been adopted against the Rice Grass-hopper which 

 has become a serious pest of sugar-cane in that province. 

 The method of storing seed potatoes in sand as a protection 

 against the l^otato moth was successfully demonstrated to 

 cultivators in Bengal. At Mokameh a campaign was or- 

 ganised against Agrotis ypsilon, a caterpillar which has 

 been destroying the crops in that region. The picking off 



