November, 1904 



BULLETIN 224 



CORNELL UNIVERSITY 



AGRICULTURAL EXPERIMENT STATION OF THE COLLEGE 



OF AGRICULTURE 



Department of Entomology (Extension Work) 



TWO GRAPE PESTS 



EFFECTIVE SPRAYING FOR THE GRAPE 



ROOT-WORM 



II. A NEW GRAPE ENEMY: 

 THE GRAPE BLOSSOM-BUD GNAT 



By M. V. SLINGERLAND and FRED JOHNSON 



ITHACA, N. Y. 

 PUBLISHED BY THE UNIVERSITY 



