August, '22] DEPARTMENT OF INSECTICIDES 327 



The creation of the Plant Protection Institute and the untiring labors of its pres- 

 ent chairman have played an important part in the interest in insecticides now 

 being shown. It is hoped that this organization may continue to point the way 

 and call to the attention of entomologists the need of investigations along various 

 lines and especially to correlate the work being done in the various parts of the United 

 States. Summer sprays for the control of scale insects is much needed at the 

 present time, and reports being received daily illustrate the little we know as to 

 the cause of summer injury by lime-sulphur and certain other summer sprays. 



Publications have recently shown an interest in the development of paraffine 

 oil sprays, both for dormant use and for summer applications. 



There is need for studies on the further use of such prominent "special-use" in- 

 secticides as sodium fluoride and bichloride of mercury. The almost universal 

 use of paradichlorobenzene for the control of the peach tree borer is evidence of 

 the great need of underground fumigants. The calcium arsenate-gypsum control 

 for the striped cucumber beetle, discovered by Messrs. Houser and Balduf is an 

 achievement of great value. It might be of interest to note that Mr. H. A. Cardinell 

 of the Missouri Extension Department, reports (Proc. Amer. Soc. for Hort. Sci., 

 1921, pp. 123-130) experiments against the striped cucumber beetle and observes 

 that a mixture of one pound of arsenate of lead, yi pound of Paris green, and 15 

 pounds of hydrated or air-slaked lime proved to be more effective against the cucum- 

 ber beetles, was easier to apply, and gave less injury from burning, than did the 

 calcium arsenate-gypsum mixture. Another insecticide, suggested several years 

 ago by Dr. Wm. Moore, (Jour. Econ. Ent., vol. 11, June 1918, p. 341) but which 

 seems not to have been given sufficient consideration by entomologists is nicotine 

 oleate. In Indiana this insecticide has been tested by Mr. H. F. Dietz, and the 

 writer, and results to date indicate its usefulness, particularly for greenhouse crops. 



The subject of spreaders and adhesives is one of considerable interest to all ento- 

 mologists and the unusual developments along this line the past year are very 

 promising. 



May 22, 1922 J. J. Davis 



Summer Meeting of the Entomologists of the Northeastern Part 

 OF the United States 



On July 26 to 28 the Entomologists of the northeastern part of the United States 

 held a meeting in the western fruit section of New York State. On Wednesday 

 morning about 18 autos left Lockport,N.Y.,and toured thru fruit sections of Niagara, 

 Orleans, Monroe, Wayne and Ontario Counties. This tour occupied two days and 

 the results seen on dusting and spraying were highly valuable from an entomological 

 standpoint. 



Wednesday evening an informal get-together was held at the Seneca Hotel, 

 Rochester. At this meeting Dr. D. N. Borodin of Russia gave a brief resume of 

 entomology and conditions as they exist in Russia today. Dr. Headlee, the chairman, 

 appointed a nomination committee and Mr. Burgess reported on the coming annual 

 meeting to be held in Boston in December, 1922. 



Thursday evening a splendid banquet was held at the Seneca Hotel in Geneva. 

 Some sixty persons attended. The chairman, Dr. T. J. Headlee called on C. P. 

 Lounsbury of South Africa, who gave an informal discussion on the early and present 

 day development of entomology in South Africa. 



