CONTENTS 
PAGE 
American Association of Economic Entomologists 
Officers , ix 
List of Meetings and Past Officers x 
List of Members xii 
Proceedings of the Thirtieth Annual Meeting of the American Association of 
Economic Entomologists 
Part 1, Business Proceedings 1 
Part 2, Papers and Discussions 16 
Economic Entomology in the Service of the Nation, Presidential Address 
R. A. Cooley 16 
Texas Aphid Notes F. B. Paddock 29 
A Method of Graphically Illustrating the Distribution of Insect Injury 
F. Z . Hartzell 32 
Notes on the Strawberry Leaf-roller, Ancylis comptana Frohl. R. L. Webster 42 
Some Experiments on the Adults and Eggs of the Peach Tree Borer, 
Samiinoidca exitiosa Say and Other Notes Alvah Peterson 46 
The Apple Ermine Moth P. J. Parrott 55 
Notes on the Life-history of Laspyresia molesta Busck 1 Philip Garman 57 
The Calcium Arsenates A. L. Lovett 57 
The Influence of Molasses on the Adhesiveness of Arsenate of Lead 
F. Z. Hartzell 62 
Spreaders for Arsenate Sprays A. L. Lovett 66 
A Study of the Toxicity of Kerosene William Moore and S. A. Graham 70 
Insecticide Tests with Diabrotica vittata N. F. Howard 75 
The Imported Cabbage Worm in Wisconsin 
H. F . Wilson and L. C. Gentner 79 
Poisoned Bait for the Onion Maggot N. F. Howard 82 
Notes on the Biology of the Angoumois Grain Moth, Sitotroga cerealella. 
Oliv. J. L. King 87 
Insects and Camp Sanitation E.P. Felt 98 
How Can the Entomologist Assist in Increasing Food Production, A 
Discussion 106 
Section of Horticultural Inspection, Proceedings 118 
The Missouri Nursery Inspection Service L, Haseman 120 
The Control of Imported Pests Recently Found in New Jersey 
H. B. Weiss 122 
Important Foreign Insect Pests Collected on Imported Nursery Stock in 
1917 E. R. Sasscer 125 
The European Poplar Canker in the Vicinity of Philadelphia, Pa. 
J. K. Primm 129 
Is Crown Gall Injurious to Apple Nursery Stock • S. B. Fracker 133 
Papers Read by Title. * 
Studies of the Life-history of Two Kansas Scarabaeidse W. P. Hayes 136 
Notes on Three Species of Apple Leaf-hoppers F. H. Lathrop 144 
Scientific Notes 149 
Editorial 151 
Current Notes 152 
1 Withdrawn for publication elsewhere. 
