PLANTS — INSECTICIDAL PROPERTIES. 29 



Balbec. (See footnote on page 26.) 



The writers' results are given on page 21. 



Baptisia tinctoria (L.) R. Br. Fabaceae. Synonym: Sophora tinctoria L. 

 Yellow wild-indigo. Eastern United States. 



Williams (94, p. 916) reports that the plants, when placed in the 

 harness, keep flies from the horses, and Porcher (68, p. 202) makes 

 similar statements about its use. 



Riley (71, p. 184) says that an alcoholic extract and a decoction 

 had no effect on cotton caterpillars. 



Berberis aquifolium Pursh. Berbeeidaceae. Oregon hollygrape. Syno- 

 nym : Mahonia aquifolium Nutt. Western North America. 



Cook and Hutchison (18, p. 4) ascertained that an infusion of 

 the roots had a considerable effect on fly larvae, but it was inefficient. 



Bocconia cordata Willd. Papavebaceae. Synonym : Macleaya cord at a R. Br. 

 Pink plumepoppy. Japan. 



Greshoff (31, p. 18) reports that the decoction is used in Japan as 

 an insecticide. 



Bryonia alba L. Ctjcukbitaceae. White bryony. Old World. 



Gomilevsky (28) reports that the root and other parts can be used 

 against aphids. 



Caladium bicolor (Ait.) Vent. Akaceae. South America. 



Greshoff (31, p. 158) reports that the powdered leaves are used as 

 an insecticide. 



CaUilepis laureola DC. Asteeaceae. South Africa. 



Greshoff (33, p. 155) reports that the powdered roots are used as 

 an insecticide in Natal. 



Cannabis sativa L. Mobaceae. Common hemp. Asia, cultivated in the 

 United States. 



Riley and Howard (72, p. 223) report that hemp combings or 

 leaves, scattered among bags and heaps of grain in India, are effec- 

 tive against weevils. 



Von Mueller (91, p. 97) says: "The hemp-plant serves as a pro- 

 tection against insects on cultivated fields, if sown along their 

 boundaries." 



Capsi' urn annuum L. Solanaceae. Common redpepper. South America, 

 now widely cultivated. 



Scott, Abbott, and Dudley (83, p. 5, 14) found that redpepper was 

 ineffective against bedbugs and roaches. 



Abbott (1, p. 12) found redpepper of no value against the dog 

 flea. 



Carapa guianensis Aubl. Meliaceae. Synonym : Xylocarpits carapa Spreng. 

 Andiroba or carapa tree. Guiana. 



Greshoff (33, p. 84), quoting Peckolt, reports that the decoction is 

 used as an insecticide. 



