College of Agriculture, 

 Cornell University, November 21, 1904. 

 Hon. C. a. Wieting, 



Commissioner of Agriculture, Albany. 



Sir. — About 150 different kinds of insects have been recorded as 

 feeding on the grape-vine in this country; but not more than one- 

 "tenth of these now rank as serious or first-class insect pests, and only 

 about one-half of the latter (or about half a dozen in all) have thus 

 far done much injury in New York vineyards. This Experiment 

 Station has made extensive studies of practically all of the serious 

 insect pests of the grape-vine in New York, the only exception being 

 that of the Rose-chafer, and upon this pest one season's preliminary 

 observations and experiments have already been made. The pre- 

 vious results have been published in the following bulletins : 



Bulletin 104, 1895. Climbing Cutworms in Western New York. 



Bulletin 157, 1898. The Grape-vine Flea-Beetle. 



Bulletins 184 and 208, 1900 and 1902. The Grape Root-worm. 



Bulletin 215, 1904. The Grape Leaf-hopper. 



When we have completed the studies of the Rose-chafer, this 

 Experiment Station will then have made investigations of all the in- 

 sect pests that have thus far appeared in very destructive numbers 

 in New York vineyards. 



L. H. Bailey, 



Director. 

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