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17. Jacobson, M. 1960. Synthesis of a highly potent gypsy moth sex 
attractant. Jour. Organic Chem., 25:2074. 
18. Karlson, P., and A. Butenandt. 1959. Pheromones (ectohormones) 
in insects. Ann. Rev. Ent., 4: 39-58, cf. p. 42. 
19. Leffler, R. 1957. Letter to Congressman H. C. Bonner, dated May 1. 
U. S. Dept. Interior, Washington. 
20. Rudd, R. L., and R. E. Genelly. 1956. Pesticides: their use and 
toxicity in relation to wildlife. Game Bull. 7, Calif. Dept. Fish & 
Game. 
21. Southeastern Association of Game and Fish Commissioners. 1958. 
Proc. Symposium: The lire ant eradication program and how it affects 
wildlife. Columbia, South Carolina, 34 pp. (Articles by Allen, 
Tarzwell, Rosene, Baker, Lay, Glasgow, Newsom and Cottam.) 
22. U. S. Dept. Agriculture. 1957. Letters from W. C. McDuffie (dated 
March 28) and A. W. Lindquist (dated April 16) of the Agricultural 
Research Service, Entomology Research Division. 
23. U. S. Dept. Agriculture. 1958. Letter from M. R. Clarkson, Acting 
Administrator of the Agricultural Research Service, dated January 3. 
24. U. S. Dept. Agriculture. 1960. Memorandum from Plant Pest Control 
Division to Conservation Foundation, New York, dated June 1, and 
accompanying statement dated May 4. 
25. Wilson, E. O. 1959. Source and possible nature of the odor trail of 
fire ants. Science, 129:643-644. 
26. Wilson, E. O., and W. L. Brown, Jr. 1958. Recent changes in the 
introduced populations of the fire ant. . . . Evolution, 12:211-218. 
27. Wilson, E. O., and J. H. Eads. 1949. A report on the imported fire 
ant. ... in Alabama. Alabama Dept. Conservation, 53 pp. + 13 pi., 
mimeographed. 
