200 Journal of Agricultural Research voi. xvii. no. 5 



Derris powder, used as a dust under practical conditions, was found 

 to be efficient against dog fleas, chicken lice, house flies, three species 

 of aphids (Aphis rumicis L., Aphis pomi De Geer, and Myzus persicae 

 Sulz.), potato-beetle larvae, and small fall webworms, but of no practical 

 value against bedbugs, roaches, chicken mites, mealybugs, Orthczia 

 insignis, red spiders, or against the crawling young of the oyster-shell 

 scale. Used as powder in water with or without soap under practical 

 conditions, it proved to be efficient against most of the aphids sprayed 

 and also against cabbage worms (Autographa brassicae Riley), the larvae 

 of apple datanas (Datana ministra Dru.), oak worms (Anisota sanatoria 

 S. and A.), small tent caterpillars, and potato-beetle Isltvse:. 



LITERATURE CITED 

 (i) Campbell, J. Argyll. 



1916. AN EXPERIMENTAL INVESTIGATfON CONCERNING THE EFFECTS OF " TUBA " 



(derris elliptica) fish-poison. In Jour. Straits Branch Roy. 

 Asiatic Soc, no. 73, p. 129-137. 



(2) Dymock, William, Warden, C. J. H., and Hooper, David. 



1890. pharmacographia indica. v. I. London. 



(3) GrEshoff, M. 



1890. mittheilungen aus dem chemisch-pharmakologischen labora- 



TORIUM DES BOTANISCHEN GARTENS ZU BUITENZORG (jaVA). In 



Ber. Deut. Chem. Gesell., Jahrg. 23, p. 3537-355°- 



(4) Hasselt, E. H. van. 



191 1. uEBER DIE piiysiologische wirkung von derrid, pachyrhizid vnd 

 NEKOE. In Arch. Intemat. Pharmacod. et Ther.,v. 21, fasc. 3/4, p. 

 243-279. 6 fig. 



(5) Hooker, J. D. 



1878. report on the progress and condition op the royal gardens 

 AT KEw, 1877. 53 p., I fig. 



(6) McIndoo, N. E. 



1916. EFFECTS OF NICOTINE AS AN INSECTICIDE. In Jour. Agr. Research, v. 



7, no. 3, p. 89-122, pi. 1-3. 



(7) and SiEVERS, A. F. 



1917. QUASSIA EXTRACT AS A CONTACT INSECTICIDE. In Jour. Agr. Research, 



V. 10, no. 10, p. 497-531, 3 fig. Literature cited, p. 528-531. 



(8) Power, Frederick B. 



1902. the CHEMISTRY of THE STEM OF DERRIS ULIGINOSA BENTH. AN EASTERN 



FISH POISON. In Pharm. Arch., v. 5, no. 9, p. 145-160, v. 6, no. i, 

 p. 1-14. 



(9) SiLLEVOLDT, H. E. Th. van. 



1899. UEBER DAS DERRID UND PACHYRHIZID, EIN BEITRAG ZUR KENNTNIS DER 



INDISCHEN FISCHGIFTE. In Arch. Pharm., Bd. 237, p. 595-616. 



(10) Watt, George. 



1890. DICTIONARY OP THE ECONOMIC PRODUCTS OF INDIA. V. 3. London, 



Calcutta. 



(11) Wray, Leonard, Jr. 



1892. ON THE MALAYAN FISH POISON C.\LLED AKER TUBA, DERRIS ELLIPTICA. 



In Pharm. Jour, and Trans., v. 52 (s. 3, v. 23), p. 61-62. 



