130 STATE BOARD OF AGRICULTURE. 



REPORT OF THE ENTOMOLOGIST. 



Annual report of the Department of Entomology of the Experiment 

 Station for the year ending June 30, 1904. 

 Prof. C. U. Smith, Director: 



Following is a brief report of the work done by the Department of 

 Entomology for the year ending June 30, 1904. 



One bulletin has been issued during the year by this office. Special 

 Bulletin No. 24, dealing with insects affecting fruits in Michigan. 



The experiment bearing on the control of mosquitoes commenced in 

 1902-3, has been continued this spring, thus far with very gratifying 

 results in spite of the extremely wet weather during the early breeding 

 season. 



Work with the codling moth instituted last year is being continued 

 in order that spraying tests may be made before publishing results 

 obtained during the first year's work, and in order also to check up the 

 dates obtained at that time. The work on fumigation of green houses and 

 forcing houses for insect pests is being systematically carried forward, 

 as occasion permits, wifh very good results, notably those obtained from 

 the vaporization of tobacco extracts. A small experimental garden is 

 now available for testing remedies against garden insects. 



Several new pests have appeared during the season, a bill bug working 

 in corn, a borer in potato stalks, a new enemy of tomatoes, and a new 

 pest working in small peach stocks. 



An experiment in cooperation with the farm department, to test the 

 various methods of curing mange in hogs, has been started, about 

 twenty hogs being under treatment at present. Studies in scale insects 

 are being made a little at a time as opportunity oilers. This work has 

 to be done from time to time, when other work does not claim too much 

 attention. 



The equipment of the department is constantly being added to. Books 

 and apparatus are added as need occurs and funds allow. The bibli- 

 ography of writings on Michigan insects is being compiled on cards. 

 This should be of great service when brought up to date. The writer 

 wishes to acknowledge the careful and painstaking assistance rendered 

 by Mr. H. F. Tuttle, Charles H. Mosier and V. R. Gardner, who have 

 done much to make the department efficient. 



Respectfully submitted, 



R. H. PETTIT, 



Entomologist. 

 Agricultural College, Mich. 

 June 30, 1904. 



'&* 



