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codling moth larvae in the laboratory, rotenone preparations, 
expo.sed to light and air -in a thin spray film, decompose too 
rapidly for -economical use. If the present search for a 
stabilizer is successful, Mr. Strong says, these compounds 
may "become valuable orchard sprays. 
The United States Department of Agriculture,, Bureau of Entomology 
and Plant Quarantine (419), in its annual report for 1935 reported 
various tests with derris. Cube is mentioned as being studied. Rotenone 
residues from cube sprays were investigated and 70 samples of derris, 
cube, and other rotenone-containing powders were examined. 
The United States Department of Commerce, Bureau of Foreign and 
Domestic Commerce, Chemical Division, in its World Trade Notes on 
Chemicals and Allied Products has frequently called attention to its 
reports and publications dealing with cube. For example, in the World 
Trade Notes (432) for May 16, 1936,. reference is -made to the report 
of Greenup (174); and in the issue (435) of September 5, 1936, reference 
is made to Seltzer (372). 
The News Edition of Industrial and Engineering Chemistry (433) 
stated that cube, derris, and other rotenone-bearing roots are rapidly 
growing in favor with American manufacturers but as yet importations 
are small. This information is from the Chemical Division, Bureau of 
Foreign and Domestic Commerce., United States Department of Commerce. 
Many casual or incidental references to the occurrence of 
rotenone in cube are found in the literature of insecticides. These 
are listed chronologically as follows: 
1930 . U. S. Dept. Agr. , 416 
1931 Skinner, 379 
1931 Spies, 388 
1932 U. S. Dept. Agr. , 410 
1932 . Chevalier, 75 
1932 U. S. Dept. Agr., 411 
1933 Frydlender, 154 
1933 Frydlender, 155 
1933 Klein, 244 
1933 London Chem. Soc, 264 
1933 Schmitt, 367 
1933 Crane, 95, 96 
1933 Storgaard, 398 
1934 Rothamsted, 361 
1934 Gimingham, 165 
1934 Kindt, 243 
1934 British Pharmaceutical Codex, 327 
1935 Robin, 355 
1935 Burkill, 57 
1935 Blijdorp, 29 
1935 Butenandt in Richter, 341 
1935 Canneri and Magini , 63 
1936 Gehlsen, 159 
