Sept. 3, 1917 Quassia Extract as a Coyitact Insecticide 531 



(36) [Riley, C. V., and Howard, L. O.] 



1891. QUASSIA FOR THE HOP .\PHis. In Insect Life, v. 4, no. 1/2, p. 84. 



(37) ^ 



1892. QUASSIA vs. PETROLEUM FOR THE HOP LOUSE. In Inscct Life, V. 4, no. 



9/10, p. 346. 



(38) RocHELDER, Friedrich. 



1858. CHEMiE UND PHYSioLOGiE DER PFLANZEN. 154 p. Heidelberg. 

 Page 22: Quassia. 



(39) Schmidt, Ernst. 



I901. AUSFUHRLICHES LEHRBUCH DER PHARMACEUTISCHEN CHEMIE. Aufl. 4, 



Bd. 2, Abt. 2, p. 1 139-1944. Braunschweig. 

 Pages 1658-1639: Quassol. 



(40) Shimojama and Hir.\no. 



1891. picrasma eilantoides, PLANCH, hi Pharm. Joiir., s. 3, v. 21, p. 1170. 



(41) Smith, J. B. 



1890. AN EXPERIENCE WITH ROSE-BUGS. In Insect Life, v. 3, no. 3, p. 113-115. 



(42) 



1891. AN EXPERIENCE WITH THE ROSE-BUG. In Insect Life, v. 3, no. 5, p. 



220-224. 



Page 223: Quassia. 



(43) 



1891. THE ROSE-CHAFER OR "rose-bug." {Macrodactylus subspinosus.) N. ]. 

 Agr. Exp. Sta. Bui. 82, 40 p., 10 fig. 

 Page 25: Quassia. 



(44) Theobald, F. V. 



1904. THREE BRITISH FRUIT-TREE PESTS LIABLE TO BE INTRODUCED WITH IM- 

 PORTED NURSERY STOCK. In U. S. Dept. Agr. Div. Ent. Bui. 44, p. 

 62-70. 



Page 67: Quassia. 



(45) Trommsdorff, J. B. 



1796. CHEMISCHE VERSUCHE UBER DIE BESTE BEREITUNGSART DES QUASSI- 



ENEXTRAKTES. In ]o\iT. Pharm., R. i., Bd. 3, p. 142-148. ^ 



(46) Washburn, F. L. 



1893. CODLING moth AND HOP LOUSE. In Oreg. Agr. Exp. Sta. Bui. 25, p. 1-13, 



3 fig., 2. pi. 



Page 10: Quassia and soap. 



(47) WiGGERS, H. A. L. 



1837. UEBER DEN QUASSIT. In Ann. Pharm., Bd. 21, p. 40-48. 



(48) WiNCKLER, F. L. 



1835. UEBER DIE DARSTELLUNG UND EIGENSCHAFTEN DES REINEN KRYSTALL- 



iNiscHEN QUASSiABiTTERS; EiNE briefliche mittheilung. In Re- 

 port. Pharm., R. 2, Bd. 4, Heft, i, p. 85-90. 



