48 BULLETIN 1201, U. S. DEPARTMENT OF AGRICULTURE. 
Von Mueller (91, p. 467) says that these plants help drive mos- 
quitoes 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 insecti- 
cide. 
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. Mediterra- 
nean 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. Cin- 
namonwood. Eastern United States. 
Porcher (68, p. 391) reports: "Bedsteads made of it are never in- 
fested 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. 
