ILLUSTRATIONS. VII 



Page 

 Fig. 18. Plat arrangement of poison-spraying experiments against the larvae of 

 the grape-berry moth in the vineyard of Mr. W. S. Wheeler, North 

 East, Pa., 1907 ! 53 



19. Gasoline-engine sprayer outfit used in vineyard experiments against the 



larvae of the grape-berry moth in vineyard of Mr. W. S. Wheeler, 

 North East, Pa., 1907, 1908, 1909 54 



20. Stage of development of grape blossom cluster at which poison-spray 



application should be made against early hatching larvae of the grape- 

 berry moth which infest the blossom clusters 55 



21. Plat arrangement of poison-spraying experiments against the grape- 



berry moth in the vineyard of Mr. W. S. Wheeler, North East, Pa., 



190S and 1909 57 



22. Overwintering cocoons of the grape-berry moth upon leaf on ground, 



beneath a badly infested grapevine 66 



23. The cherry fruit sawfly (Hoplocampa coohei): Egg, larvae, adult and 



details, work 75 



24. Microbracon sp., a hymenopterous parasite of the cherry fruit sawrly. . . 78 



