13 



Lee a. Strong, San Francisco, Cal.: — "Western Views on Plant 



Quarantines." 

 W. A. McCuBBiN, Harrisburg, Pa.: — "Factors Contributing to 



Success in Domestic Quarantines." 

 W. A. Orton, Washington, D. C: — "Biological Basis of Foreign 



Plant Quarantines." 



General Discussion. 



Adjotimment. 



Program 



Saturday, December jo, IQ22, i:jo p. m. 



(Massachusetts Institute of Technology, Cambridge, Mass.) 



Reading of Papers 



"Another Important Step in the Control of the Hessian Fly in Kansas," 

 by George A. Dean, Manhattan, Kansas. (10 minutes). 



"The Resistance of Wheat to the Hessian Fly, — A Progress Report," 

 by James W. McCoUoch, Manhattan, Kansas. (15 minutes). 



A summary of the experiments on the resistance of different varieties of wheat to 

 Hessian fly injury. 



"Some Studies of Hessian Fly Behavior," by T. H. Parks, Columbus, 



Ohio. (10 minutes). Lantern. 

 Five years of observations on relations of time of seeding and the fall infestation. 



"Simimary of the Research Activities on the European Com Borer," 

 by D. J. Caffrey, Arlington, Mass. (15 minutes). 



"The Economic Importance of Crambus caliginosellus Clemens," by 



George G. Ainslie, Knoxville, Tenn. (5 minutes). 

 A short sketch of the damage done by this species and the locations where trouble 



may be expected. A brief summary of the life history. 



"Control of Popillia japonica larvae in golf greens," by B. R. Leach, 



Riverton, N. J. (5 minutes). 

 Experiments in preparation and appHcation of carbon disulphide emulsions for 



control of larvae in turf. 



"Observations on the Resistance of Certain Sorghtrais and their Hy- 

 brids to Chinch Bug Injury," by William P. Hayes, Ithaca, N. Y. 

 (15 minutes). Lantern. 



Crosses of Kansas Orange Cane and Dwarf Milo indicate resistance and segregation 

 in Fa generation. 



