4 
“Eleodes opaca Say., An Important Enemy of Wheat in the Great 
Plains Area,” by J. W. McColloch, Manhattan, Kan. (12 
minutes.) 
Life economy, economic importance, enemies, and some suggestions for its 
control. 
“A Much Neglected Factor in Natural Control of Grain Aphis Epi¬ 
demics— Hippodamia convergens Guer.,” by A. C. Burrill, Pull¬ 
man, Wash. (5 minutes.) 
This paper will give some idea of the number and wide distribution of lady 
beetle caches, history of their use in the Northwest, some figures on com¬ 
parative costs of control measures in favor of using beetles. 
“ Nineteen Hundred and Eighteen (1918) Outbreak and Control of 
Melanoplus atlanis,” by E. G. Kelly, Manhattan, Kan. (15 
minutes.) 
Beginning of the outbreak in 1917—Discing for control. Campaign for poi¬ 
soning in spring 1918—followed by second campaign for late seeding of 
wheat and poisoning. 
“ Experiments with Poison Bait against Grasshoppers,” by D. A. 
Ricker, W. Lafayette, Ind. (10 minutes.) 
Results obtained from a series of experiments with several poisons and a 
number of baits alone and in combination. Also comparison of results 
with complete meteorological data during the period. 
“ Reducing the Cost of Poison Baits,” by J. J. Davis, Lafayette, Ind. 
(7 minutes.) 
A short note summarizing results from all over the country as to the value of 
crude arsenious oxide. 
“ Methods of Obtaining Data from Field Experiments,” by W. P. 
Flint, C. F. Turner and J. J. Davis, W. Lafayette, Ind. (10 
minutes.) 
Comparative methods for making insect counts with special reference to 
Hessian fly. 
“ Value of Shuck Covering in Conserving Corn in the Extreme South,” 
“ The French Bark Thiers and her cargo of Australian Wheat,” 
by E. A. Back, Washington, D. C. (10 minutes.) 
“Insects Affecting Wheat Flour and Wheat Flour Substitutes,” by 
Royal N. Chapman, Minneapolis, Minn. (15 minutes.) 
The war-time emergency—the relative susceptibility of various cereals to in¬ 
sect attack—methods of control, in mills, for small consumers, and for large 
consumers. 
Adjournment. 
