1908.] PUBLIC DOCUMENT — No. 33. 151 



REPORT OF THE ENTOMOLOGISTS. 



C. H. FERNALD ; II. T. FERNALD ; J. N. SUMMERS. 



Outline of Work. 



The four divisions into which the entomological work of the 

 experiment station is naturally divided — correspondence, ex- 

 perimental investigations, special research and publication — 

 have each received their share of attention during the past 

 year. 



The correspondence has been as large in amount as hereto- 

 fore. ]\Iany inquiries about many kinds of insects have been 

 received and answered as fully as possible : and in this con- 

 nection the printing of a number of circulars, treating of the 

 insects most frequently asked about, has greatly facilitated the 

 work, as a circular can be sent in a small fraction of the time 

 necessary to write out the same information, besides giving an 

 opportunity to send illustrations of the insects and of their 

 work. 



Experimental investigations during the year have been along 

 numerous lines. Determinations of the resistance of different 

 crops to fumigation with hydrocyanic acid gas have been con- 

 tinued, and are now complete for the cucumber, and similar 

 tests for muskmelons are under way. 



An extensive series of tests of different methods for the con- 

 trol of cabbage, turnip and onion maggots was also begun. 

 The cabbages, being the first crop on Avhich treatment was pos- 

 sible, were experimented with in nine different ways. Un- 

 fortunately, it soon became evident that no treatment of any 

 kind would be needed, almost no maggots being present either 

 in the check rows or in the field anywhere, so that the only 

 data of any value which could be obtained were those relative 



