10 
Program 
Tuesday Afternoon Session, January i, 1924 , 1:30 p. m.; Chemistry 
Auditorium 
Reading of Papers 
24. Control of the Root-Knot Nematode. (15 min.) J. R. Watson, 
Gainesville, Fla. 
25. The Use of Calcium Cyanide Against Fleas and Other Injurious 
Insect Pests. (10 min.) K. C. Sullivan, Columbia, Mo. 
A brief summary of experiments which have been conducted during the past season 
with calcium cyanide on the control of fleas and melon pests; also some brief 
notes on its use for fumigating greenhouses and nursery stock. 
26. Calcium Cyanide. (10 min.) William Moore, New York, N. Y. 
The manufacture, chemical composition and the reactions which makes this com¬ 
pound a promising insecticide. 
27. Soil Insecticide Investigations at the Japanese Beetle Laboratory 
during 1923. (5 min.) B. R. Leach, W. E. Fleming and J. P. Johnson, 
Riverton, N. J. 
28. Insecticidal Properties of Some Sulfur Compounds. (10 min.) 
Albert Hartzell and F. H. Lathrop, Geneva, N. Y. 
The methods of preparation of a Carbon Disulfide Emulsion and its possibilities as 
a contact insecticide. 
29. The Price of Insecticides. (10 min.) V. I. Safro, Clarksville , 
Tenn. 
Elementary economic factors almost universally lost sight of by entomologists in 
the search for cheaper insecticides. 
30. The Japanese Beetle Status in 1923. (10 min.) L. B. Smith. 
Riverton, N. J. 
General summary of spread and results of investigations on the control of this insect 
in 1923. 
31. Some Recent Developments in the Use 4 ParadicY robenzene. 
(10 min.) S. C. Chandler, Carbondale, Ill. 
32. Three Years of Paradichlorobenzene Experiments in the South. 
(10 min.) O. I. Snapp, Fort Valley, Ga. 
33. Carbon disulphid for exterminating the Round-Leaded Apple- 
tree borer ( Saperda Candida ). (10 min.) O. A. Johannsen, Ithaca, N. Y. 
The proposed method requires less time than when using the knife; neither mutilates 
nor injures the tree, andwhen properly used, is 100% efficient. 
