list of properties follows: 
1. The chemical should be insoluble in water at pH not less than 
oh 
2. It should be readily: soluble in water at pH 7 to 8. 
3. It should preferably have a sharp rise in solubility between 
rather narrow limits of pH value, on the acid side; the nearer 
to neutral this can be, the better. 
4. There should be no tendency to volatilize at maximum out— 
door temperatures, exposed to direct sunshine. 
5. It should be solid at ordinary temperatures. The melting 
point should be well above maximum outdoor temperatures. There 
should be no tendency to deliquesce when exposed to moisture. 
6. It should be chemically stable, so as to remain for several 
days exposed to ordinary summer weather conditions. 
7. It should be about as toxic as nicotine. 
If a chemical having such properties can be obtained, it will be 
interesting to test its insecticidal efficiency. 
A. J. Ackerman, in charge of ccdling moth investigations, Benton—- 
ville, Ark., states that the high survival of codling moth larvae during 
the past winter, together with the ideal weather for oviposition by the 
Sspring-—brood moths, has resulted in the most severe first-—brocd ccdling 
moth outbreak on record in this apple section. The recommendations to 
growers for dates for applications of the first-—brood cover sprays, is— 
sued through the extension division of the Arkansas State University, 
have given the growers an excellent opportunity to control these worms. 
Mr. Ackerman comments that the Ozark district in Arkansas and Missouri on 
June 30, 1931, was in a more serious drought condition than at the same 
date in 1930. 
A public service patent for tree bands has been granted to E. H. 
Siegler, of the Takoma Park, Md., laboratory. An additional supply of 
these chemically treated bands for the codling moth was made up during 
the month of June and the bands were distributed to several States where 
cooperative tests are being conducted. A final report on the work con- 
ducted at Yakima, Wash., with chemically treated bands during the sea-— 
son 1930 is in agreement with other reports, and shows that more than 99 
per cent of the larvae in the bands had been killed. The chemically 
treated bands used in Indiana last season were received and examined at 
the laboratory, and all larvae contained in them were found to be dead. 
