BIBLIOGRAPHY OF U.' 8. NATIONAL Ml Ml M. 359 



CHARLES VALENTINE RILEY. 



Recent outbreaks of the Army worm. 



(Rami Nru Yorker, 43, Jan. I'.'. 1884, p. 19.) 



Rare occurrence of Leucania unipuneia in L882 and L883, following ita lasl 

 abundant occurrence in 1881; occurrence of the larva at Eaal Windsor, Vt., 

 in .June, 1883. 



Recent advances in economic entomology. 



(Proo. Philoe. 8oc. Wash., vii, 1884, pp. 10-12.) 

 Separate, without title-page [Wash., 1884], pp. 10-12. 8v<>. 

 Abstract of communication made to Philosophical Society ol Washington, 

 February 2, 1884; characteristics of economic entomology as a science, and 

 difficulties of its prosecution; mention of chief insecticide substances, and 

 discussion of their applicability; notice of recent progress in mechanical 

 appliances. 



Tribute to the memory of John Lawrence Leconte. 



(Psyche, 4, Nov.— Dec, 1883 [Feb. It, 1884], pp. 107-110.) 



Separate : without title-page [Cambridge, Mass., Feb., 11, 18^4], pp. 107 - 

 110. 8vo. 



Notice. Psyche, id <it., p. 119. 



Biographical notice of J. L. Leconte, b. May 13, 1825, d. Nov., 15, 188:5; 

 amount, character, and importance of Leconte's work and writings; his per- 

 sonal character; his relations with G. H. Horn ; disposition of his entomo- 

 logical collection. 



General truths in applied entomology. Essay. 



(Trans. Georgia State Agric. Soc, 1884, pp. 153-159.) 



General truths in applied Entomology; being a paper read before the 

 Georgia State Agricultural Society, at Savannah, Ga., February 

 12, 1884, by Charles V. Eiley, Ph. D., United States Entomologist. 

 Extracted from the Transactions of Georgia State Agricultural 

 Society, 1884. With title-page and cover: pp. 153-159. 8vo. 



Importance of insects and of the study of economic entomology ; causes of 

 the destructive prevalence and amount of the ravages of insects in North 

 America ; complicated nature of the problem which the economic entomolo- 

 gist has to solve; mention of the principal insecticide substances in use now 

 and formerly ; special availability of several of these substances for certain 

 purposes; transcendent importance of arsenical substances (arsenic, Paris 

 green and London purple), petroleum and pyrethrum for insecticide purposes; 

 methods of preparation and use of these latter substances; specific action of 

 pyrethrum powder, its effect on higher animals, and probable use in medicine 

 and as a disinfectant ; petroleum emulsions against J'ln/loxera vastatris; 

 mechanical devices for spraying liquid iusecticides. 



The Army-worm, Leucania tmipuncta, Haw. 



(3d Rep. U.S. Entom. Com., 1883 [March 1884], pp. 89-15(3, pi. 1-2 ; expl. 

 Of pi. on p. 2 of expl. of pi.) 



The Army worm ; being an account of its history and injuries in the 

 United States up to the year 188,3, with practical recommendations. 

 Author's edition. 



(Extracted from the Third Report of the United states Entomologies! Com- 

 mission, 1883. Washington, March, 1884, pp. 89-15b, pi. 1-2. 8 vo.) 



