CONTENTS 



PAGE 



American Association of Economic Entomologists 



OflBcers jx 



List of Meetings and Past Officers x 



List of Members xii 



Proceedings of the Thirty-First Annual Meeting of the American Association 

 of Economic Entomologists 



Part 1, Business Proceedings 1 



Part 2, Papers and Discussion 



Economic Entomology — Its Foundations and Future, Presidential 

 Address E. D. Ball 24 



Practical Application of the Methods Recently Discovered for the 

 Control of the Sprinkling Sewage Filter Flv, Psychoda altemata 



T. J. Headlee 35 



The Occurrence of Drosophila Larvae and Puparia in Bottled Milk^ 



W. A. Riley 41 



Some New Phases of the Entomology of Disease, Hygiene and Sani- 

 tation Brought about by the Great War W. D. Pierce 42 



Presidential Address, Discussion 49 



The Ohio Wheat Survey H. A. Gossard 58 



Insects in Relation to Wheat Flour and Wheat Flour Substitutes 



R. N. Chapman 66 



Kerosene Emulsion versus' Nicotine Solution for Combating the Po- 

 tato Aphid " W. E. Britton and M. P. Zappe 71 



The Status of the Oriental Peach Moth E. N. Cory 81 



Control Work against the Japanese Beetle^ W. H. Goodwin 84 



The Discovery of European Potato Wart Disease in Pennsylvania 



J. G. Sanders 86 



An Exiropean Scale Insect Becoming a Menace in Pennsylvania 



J. G. Sanders 90 



The European Corn Borer Problem D. J. CaQrey 92 



Biological Notes on Some Flatheaded Barkborers of the Genus Mel- 

 anophila H. E. Burke 103 



The Life-Cycle of Lachnostema lanceolata Say W. P. Hayes 109 



Recent Results in the Fumigation of Citrus Trees with Liquid Hydro- 

 cyanic Acid R. S. Wogluni 117 



Scientific Notes 124 



Editorial 125 



Honor Roll 126 



Reviews 128 



Current Notes 129 



'Withdrawn for publication elsewhere. 



