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STEtfOBACEAE 
STEWQKA COLLINS AE Craib. 
Extracts of the tubers of this plant from Slam were nontoxic to 
the bean aphid •— Tattersfi eld and Gimingham ( 391 ) * 
STEMCWA TUBEH08A Lour* Paipu. 
Decoctions of the dried roots in indo-China gave 90 percent mor- 
tality of crickets in 6 days. 40 percent mortality of weevils in 6 days, 
and 100 percent mortality of lepidopterous larvae* Extracts of the 
roots made with carbon tetrachloride, ehloroform, ether, alcohol, and 
bensene extracts, when tested against the rice weevil, gave mortalities 
Of 77, 70, 62, 55, and 55 percent, respectively, when used alone, and 
Bl, 67, 60, 67, end 25 percent* when used with 2 percent of saponin*- 
Xante (292)* 
This plant has long been reoogniced in China as an inseoticide and 
six references are cited* As early as A* D* 960 the drug was recom- 
mended for killing lice and fleas, and the present experiments conclu- 
sively proved that a 50-percent alcoholic extract of the raw drug, ob- 
tained from a Chinese drug store, was very effective against the body 
louse, the pubic louse, and oertain sucking liee on animals* The drug 
was also effective in killing the eggs of lice*— Wang ( 418 )* 
8TERCULIACEAB 
(Cola-Hut Family) 
PTEROSPERMOM ACERIFOLIUM (L.) Willd. Synonym; P. aoeroldos Wall* 
In India the flowers were used as a disinfectant and to keep insects 
away from bed clothes.— Watt (422 , v* 6, pt* 1, p* 562)* 
Extracts applied as sprays against adult mosquitoes were much in- 
ferior to the standard mosquitooide*— Wats and Singh ( 421) * 
THBOBROMA CACAO L. Caeao. Cocoa* 
A chocolate manufacturer mentioned an odd experience in connection 
with disposal of the ooooa shells* Some of the shells were used as 
bedding for dogs* Later the keeper credited the shells with having 
caused the disappearance of fleas that had infested the dogs*— Walton 
end Gardiner ( 417 )* 
STYBACACEAB 
(Storax Family) 
HALE3IA CAROUHA L. Silverbell tree* 
Dead Japanese beetles were found under this tree •— Met sger (276)* 
