"Studies in Insecticides," by F. B. Lowe, Detroit, Mich. (15 

 minutes. ) 



Results of recent work with insecticides. 



"Results of Recent Experiments in the Use of Hydrocyanic 

 Acid Gas foe Fumigation Purposes," by R. S. Woglum, Washing- 

 ton, D. C. (15 minutes.) 



"Carbon Disulfid Fumigation for the Rice Weevil in Corn," 

 by W. E. Hinds, Auburn, Ala. (12 minutes.) 



A brief discussion of the results of investigations along this line upon 

 both small and large scales. 



"Notes on the Oyster Shell Scale in Montana," by R. A, 

 Cooley, Bozeman, Mont. (10 minutes.) 



"Notes on the 'Cigarette Beetle', "by P. H. Hertzog, Lewisburg, 

 Penn. (10 minutes.) 



Extent of injury. Fumigation results. Other devices for fighting it 

 and results. 



"CoLLEMBOLA AS In.jurious Insects, " by Walter E. Collinge, 

 Uffington, Berkhamsted, England. (7 minutes.) 



Illustrates the part they play as carriers of plant diseases by means 

 of the spores of fungi which become attached to their bodies, quite apart 

 from their own depredations due to feeding. 



Adjournment. 



Program 



Wednesday, December 29, 10 a. m. 



Reading of Papers 



"The Relation of Temperature to the Growth of Insects," 

 by E. D. Sanderson, Durham, N. H. (15 minutes.) 



An account of experiments in rearing various insects at different tem- 

 peratures and a discussion of their theoretical import. 



"A Constant Low Temperature Apparatus for Biological In- 

 vestigations," by E. C. Cotton, Knoxville, Tenn. (15 minutes.) 



Description of a plant recently installed at the Tennessee Agricultural 

 Experiment Station, designed to secure and maintain constant low 

 temperatures for the study of problems connected with the life history 

 of the North American Fever Tick. (Illustrated with lantern slides.) 



"The Larch Saw Fly (Nematus erichsonh)," by C. Gordon 

 Hewitt, Ottawa, Canada. (10 minutes.) 



(V) 



