June, 1919] ANNUAL REPORTS. 23 



agriculture, in charge of insect suppression for the state. The lines of this 

 work often approach closely the functions of the Department so that it often 

 becomes particularly advantageous for these two departments to work har- 

 moniously, with activities based upon a co-operative relationship. 



Several concrete instances concerning this relationship might be cited, one 

 in particular being the work of control of grasshoppers, which has been carried 

 on in various towns in the state during the summers of 1917 and 1918. In this 

 case members of this Department were called upon for expert technical advice 

 and assistance, working with members of the State Division of Insect Sup- 

 pression upon this project. 



Although not in any way officially connected with the Extension Service, 

 members of this Department are on the list of extension speakers and a great 

 deal of the work, especially during the summer months, has a decided bearing 

 on the extension of agricultural education to the people of the state. 



Like many other Station departments, the regular work of this Department 

 has undoubtedly suffered during the period covered in this report because of the 

 war and the demands made upon all Station workers in connection with it. 

 The projection, therefore, of project pubhcations has been possibly somewhat 

 interfered with. 



Largely in an effort to assist in the more extensive production of food crops, 

 several press bulletins, dealing with particularly serious insect pests of garden 

 crops and their control, have been prepared and published. These are: Ex- 

 tension Press Bulletin No. 104, "The Stalk Borer," by C. R. Cleveland; 

 Extension Press Bulletin No. 105, "The Rose Chafer or Rose Bug," by C. R. 

 Cleveland; Extension Press Bulletin No. 106, "The Squash Bug," by C. R. 

 Cleveland; Extension Press Bulletin No. 107, "The Striped Cucumber 

 Beetle," by C. R. Cleveland; Extension Press Bulletin No. 108, "The Potato 

 Flea Beetle," by C. R. Cleveland. In addition to these the entomologist has 

 pubhshed the regular biennial report of the Division of Insect Suppression 

 for the State Department of Agriculture in form of Circular No. 12, "Re- 

 port of the Plan and Progress of the Work." 



The work of adding to the insect collection has been carried on during the 

 past year as usual, though the pressure of other duties sometimes makes it 

 impossible to do as much of that highly necessary work as might be desired. 



Some new spraying appliances have been secured and quite a quantity of 

 special equipment to be used particularly in carrying on the work to be done 

 in connection with the studies of insecticidal properties of pjTethrum and 

 hellebore. 



INVESTIGATION UNDER ADAMS FUNDS. 



Control of Root Maggots by Insecticides Applied to the Surface of 



THE Soil. 



While this part of the investigation of root maggots is carried out as a field 

 study, it follows Unes suggested by laboratory work from time to time and is 

 supplemented by such work as occasion arises. Furthermore, although car- 

 ried out in the field, it is really an intensive study, involving minute detail 

 work. 



