"An Account of the Successful Use of the Aeroplane in Dusting Tall 

 Trees Infested with Leaf Eating Caterpillars," by J. vS. Houser, Wooster, 

 Ohio, and C. R. Neillie, Cleveland, Ohio. (15 minutes). Lantern. 



"The Boom Nozzle System and the Traction Duster as Factors in Grape 

 Leafhopper Control," by D. M. DeLong, Columbus, Ohio. (10 

 minutes) . L ant em . 



Comparative results with trailer and boom nozzles and a preliminary report of results 

 with the traction duster. 



"The Effect of Nicotine Sulfate in Dust Carriers upon Chewing and 

 Sucking Insects," by John E. Dudley, Jr., Madison, Wis. (15 

 minutes). Lantern. 



New and interesting results with nicotine dusts appear to depend largely upon method 

 of application for their effectiveness. 



" Insecticidal Value of Bordeaux Mixture," by F. A. Fenton and Albert 

 Hartzell, Ames, Iowa. (10 minutes). 



Results of field and laboratory t( sts on toxicity of commercial and home-made 

 Bordeaux mixtures on Empoasca mali. 



"Derris as a Promising Insecticide," by R. W. Wells, F. C. Bishopp, and 

 E. W. Laake, Dallas, Texas. (8 minutes). 



Experiments are summarized in which are shown the effectiveness of Derris against 

 Siphonaptera, Anopliu-a and Mallophaga. 



"The Apple Sucker {Psyllia mali Schmidberger)," by W. H. Brittain, 



Truro, Nova Scotia, Canada. (15 minutes). Lantern. 

 A brief account of the history, biology and control of this recently introduced pest. 



"Spray Schedule for Red Bugs in Pennsylvania," by S. W. Frost, Arendts- 

 ville, Pa. (10 minutes). 



Will present data substantiating a change of schedule for Red Bug treatment from the 

 Pink and Codling moth to the Codling moth and Ten Day sprays. Based on con- 

 ditions found in Pennsylvania. 



"Relation of Temperature to the Life Histon,' and Seasonal History of 

 the Codling Moth," by P. A. Glenn, Urbana, 111. (15 minute.?). 

 Lantern. 



Temperature constants have been determined approximately for the different stages. 

 The complete life cycle and the time of the appearance of the first larvae of each 

 generation, and a spray program based upon temperature accumulations. 



