Nov., 1912.] ANNUAL REPORTS. 29 



anticipation of favorable results. There are none of the station sheep notice- 

 ably affected with stomach worms at the present time; however, tobacco 

 that has been soaked in a strong salt solution is kept before them at all times 

 as a preventive measure. They seem to be very fond of the salted leaves and 

 greatly enjoy nibbling away at them. 



If it can be satisfactorily shown that tobacco acts as a preventive of w r orms 

 in sheep it will mean a great deal to the industry, as a preventive is always 

 better than a cure. Since ample funds are not available to carry on this work 

 on an extensive scale, it might be brought to a termination much sooner if 

 some of the sheepmen in the vicinity of the Station would cooperate in this 

 work, that is, for example, loan a few worm infected sheep to the Station 

 for experimental purposes. 



REPORT OF THE DEPARTMENT OF 

 ENTOMOLOGY. 



w. c. o'kane. 



As in former years the work of this department, for the period ending October 

 30, 1912, falls into three general groups. 



First, Adams Fund Investigations, which are designed to be exhaustive in 

 their nature and to continue throughout a period of years. One of these 

 studies, which is concerned with the apple maggot or railroad worm, has been 

 practically completed with the close of the present season. This has been in 

 progress for somewhat more than three years. A second investigation, con- 

 cerned w T ith the control of the root maggots, is now under way, having been 

 started about a year ago. Several years will be required for this investigation. 



Second, Minor Investigations conducted under Hatch Funds. Three groups 

 of experiments have been in progress during the past season. One of these 

 is concerned with the life history and control of black flies, deer flies and midges. 

 This has been under way for several years. A second investigation was under- 

 taken to determine the amount of arsenic left on fruit, foliage and grass in 

 ordinary spraying operations. This is now actively under consideration. 

 A third investigation is concerned with insect outbreaks and has taken up 

 two interesting questions, as described later. 



Third, Miscellaneous Work, supported by Hatch Funds; including the prepa- 

 ration and maintainance of the Station collection of insects, the answering 

 of voluminous correspondence, and the preparation and maintainance of a 

 complete cross-index file of injurious insects of New Hampshire, with their 

 food plants and localities. 



Organization and Equipment. 



The Assistant Entomologist, Miss Cornelia F. Kephart, resigned on Septem- 

 ber 1, 1912, after twelve years of faithful service, and was succeeded by Mr. 



