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borer control than any. of the dusts used; (2) derris dusts were more 
effective than nicotine dusts; (3) none of the dusts tested were 
satisfactory when dealing with high borer populations; and (4) very 
heavy infestations can be controlled satisfactorily and profitably 
in early market sweet core with derris*— Quest el (484) • 
Rotenone was recommended in 1944 against the corn borer on sweet 
corn in victory gardens.— White and Doolittle (683 ) . 
Rotenone-bearing materials, during the emergency, were permitted 
to be used against this pest only on sweet corn in home gardens, or 
for marketing, green. The substitutes were sprays of nicotine ben- 
tonite and nicotine tannate, and dual-fixed nicotine dust.— U. S. 
Department of Agriculture (633 , p. 14). 
Saturnii dae 
Kudaurelia oytherea capensis (Stoll), pine tree emperor moth 
Pyrethrum, derris, and dinitro-o-oresol were very promising a- 
gainst larvae of the third, fourth, and fifth instars in South Africa. 
— Naude (437). 
Derris and pyrethrum dusts in South Africa were effective against 
larvae in the third instar but were considerably less toxic against 
later instars.— Tooke and Hubbard (594 ) . 
Sphingidae 
Celerlo lineata (F.), the white-lined sphinx 
In Arizona this pest can be controlled by hand collection and 
by derris sprays .-Wehrle (668 ). 
Ceratomia catalpae (Bvd.), the catalpa sphinx 
The median lethal doses of various insecticides fed in leaf sand- 
wiohes to last-instar larvae were expressed as milligrams of a 1-per- 
cent rotenone powder as follow: Derris 0.07, Tephrosia 0.07, timbo 
0.11, and cube 0.17; and expressed as milligrams of principal toxins 
(Goodhue rotenone-deguelin values), the doses were 0.0016, 0.0015, 
0.0018, and 0.0019, respectively. The data indicated the inadequacy 
of rotenone content alone to express the insecticidal value of a rota- 
none-bearing product and emphasised the importance of the Goodhue rote- 
none-deguelin value as a supplementary expression.— Aran t (22, _26) • 
