Von Mueller (91, p. 467) says that these plants help drive mosquitoes away Cook and Hutchison (18, p. 4) found that the ground cake of the castor-bean had no effect on fty larvae. The writers' results are given on page 9. Rosmarinus officinalis L. Menthaceae. Rosemary. Mediterranean region. Von Mueller (91, p. 472) savs : " Branches of this shrub will keep off moths from wearing apparel packed away." JRoylea elegans Wall. Menthaceae. Himalayan region. Greshoff (33, p. 138) reports that the leaves are used as an insecticide. Rumex sp. Polygon aceae. Riley (71, p. 186) found that an alcoholic extract was ineffective against cotton caterpillars. Ruta graveolens L. Rutaceae. Common rue. Southern Europe. According to Roark (75, p. 102), "A strong decoction obtained by macerating the leaves of the plant in soap and water, is stated by Forney to be a successful remedy for American blight/' Samadera indica Gaertn. Simarubaceae. Synonyms: S. pentapetala G. Don.. Niota pentapetala Poir., N. commersoni Pers. Greshoff (31, p. 30) lists it as an insecticide. Sambucus canadensis L. Caprifoliaceae. American elder. United States. Porcher (68, p. 44$) says: "A decoction made by pouring boiling water over the leaves, flowers, or berries of the elder is recommended as a wash for wounds to prevent injury from flies.-' The writers' results are given on page 23. Sambucus nigra L. European elder. Europe. Porcher (68, p. 44$) says that the leaves of the English elder are noxious to insects, moles, etc. Greshoff (33, p. 149), quoting Cutler, 1785, says: "It is said, if fruits are whipped with the green leaves and branches of elder the insects will not attack them." Santolina chamaecyparissus L. Asteraceae. Lavender-cotton. Mediterranean region. Greshoff (33, p. 158) lists this as an insecticide. Passerini (66) says that it killed the dog flea, although very slowly, but had practically no effect on flies and ants. Sassafras variifolium (Salisb.) Kuntze. Lauraceae. Synonyms: S. sassafras Karst., 8. officinale Neee. and Eberm., Laurus sassafras L. Sassafras. Cinnamonwood. Eastern United States. Porcher (68, p. 391) reports: "Bedsteads made of it are never infested with bugs." Riley (71. p. 186) reports that an alcoholic extract of the dried bark of the roots had no effect on cotton caterpillars. Abbott (/. /;. 7, 11) found powdered sassafras bark very effective against chicken lice and the dog flea, but he does not recommend it against these insects.
