PLANTS — IXSECTK'IDAL PROPERTIES. 49 
Saussurea lappa (Decaisne) C. B. Clarke. Astekaceae. Synonyms: Aplotaxis 
lappa Decaisne, Aucklandia cost us Falconer. Costus root. Himalayan re- 
gion. 
Von Mueller (91, p. 492), quoting De Rinzi, says that this plant 
is used as an insecticide to keep moths from cloth. The leaves are 
used as a wrapping for shawls. 
Schkuhria abrotanoides Roth. Astekaceae. Peru to Argentina. 
Haas (36) reports that the flowers of this are used in Peru for the 
same purpose as insect powder. 
Von Mueller (91, p. 497) says that this annual herb yields locally 
an insecticide powder. 
Schoenoeaulon officinale (Schlecht. & Cham.) A. Gray. Liliaceae. Syno- 
nyms: Veratrum officinale Schlecht. & Cham., Helonias officinalis Don. Asa- 
graea officinalis Lindl.. Sabadilla officinarum Brandt & Ratzeb. Sabadilla. 
Cebadilla. Mexico to Venezuela. 
The use of sabadilla seed against lice seems to have been known for 
a long time. According to various botanical books, sabadilla powder 
is used by cattle raisers in Venezuela as an insecticide with excellent 
results. 
Herrera (40, p. 21) had no success with it against the winged forms 
of fruit maggots (Instrypetos hidens I. D. B.). 
MeClintock, Hamilton, and Lowe (58, p. 233) ascertained that 
sabadilla seeds, used as a fumigant. had a slight effect on flies and 
clothes moths and a considerable effect against mosquitoes. 
Scott. Abbott, and Dudley (83, p. 5, 12) ascertained that powdered 
sabadilla seed, used as a dust, killed from 95 to 100 per cent of the 
bedbugs treated within 48 hours: and used as a stomach poison (1 
part to 9 parts of corn meal) , it killed from TO to 100 per cent of the 
roaches treated within 19 to 34 days. 
Abbott (1, p. 7) found the powdered seed effective against chicken 
lice, but he cloes not recommend it because it is too expensive and not 
readily available in large quantities. 
The writers' results are given on page 9. ' 
Sericocarpus asteroides (L.) B. S. P. Asteeaceae. AVhitetop-aster. East- 
ern United States. 
The writers' results are given on page 23. 
Sideroxylon borbonicum A. DC. Sapotaceae. Bourbon Island. 
Greshoff (31, p. 101) lists this as an insecticide. 
Solanum auriculatum Ait. Solanaceae. Asia. 
Greshoff (33, p. 141) reports that a decoction of the berries is 
used as an insecticide. 
Solanum carolinense L. Horsenettle. Eastern United States. 
Riley (71) found a decoction of this ineffective against cotton cater- 
pillars. 
The writers' results are given on page 23. 
