Reading of Papers 



"Methods in Photographing Insects," by W. C. O'Kane, Durham, 

 N. H. Lantern. (12 minutes.) 



"Pellagra and the Sand Fly," by S. J. Hunter, Lawrence, Kan. (15 

 minutes.) 



A series of experiments and investigations to determine what part, if any, this insect 

 plays in the transmission of Pellagra. 



"Some Problems of Mosquito Control in the Tropics," by Allan H. 

 Jennings, Washington, D. C. (15 minutes.) 



Adjournment. 



Program 



Thursday, December 28, 10 a. m. 



Reading of Papers 



"The Date when Wheat Should be Sown to Escape the Fall Brood of 

 Hessian Fly," by T. J. Headlee, Manhattan, Kan. (10 minutes.) 



A brief discussion of the factors which determine this date in the hght of three years' 

 experimental tests. 



"The Corn Bill Bug {Sphenophorus callosus)," by R. I. Smith, West 

 Raleigh, N. C. (15 minutes.) 



A biological study of this insect, including records of egg-laying, hatching, rearing, 

 etc. 



Discussion to be led by F. M. Webster, Washington, D. C. 



"Wire Worms in Corn and Potatoes," by O. A. Johannsen, Orono, 

 Me. (5 minutes.) 



A simamary of the work done at Highmore Farm, Maine, with poisons and repellants 

 and a discussion of crop rotation with a view of obtaining suggestions for continued 

 experiments. 



"Grasshopper Work in Minnesota for the Season of 1911," by F. L. 

 Washburn, St. Anthony Park, Minn. (12 minutes.) 



Brief review of conditions, experiments and remedial measures employed. 



Discussion to be led by Lawrence Bruner, Lincoln, Neb., and C. P. 

 Gillette, Fort Collins, Colo. 



