279 



of the chief difficulties is the lack of accurate knowledge concerning 

 the pest under consideration. It is suggested that the work to be 

 undertaken in the case of important pests should devolve upon the 

 Federal Bureau of Entomology as well as the States immediately 

 concerned. Should the Government undertake the task, the execution 

 of it could be placed in the hands of trained men who would be in a 

 position to carry out the work completely and at the proper time. 



Where complete eradication is impossible and the pest can only 

 be kept well in check, there is every reason why the property owner 

 should undertake his share of the burden. If the support of farmers 

 is to be obtained, a definite plan of education, with regard to insect 

 control, wall have to be adopted. Though posters and bulletins are 

 of great value for this purpose, verbal explanations reinforced by cir- 

 culars distributed at the same time are considered to be the most 

 effectual means of educating the public. 



Another important factor that has to be considered is the limitation 

 of human capabilities, it being almost impossible to combine in one 

 individual a perfect administrator and a successful scientific 

 investigator. 



GuYTON (T. L.). Nicotine Sulphate Solution as a Control for the 

 Chrysanthemum Gall Midge, Diarthronomyia hypogaea, H, Lw. — 

 Jl. Econ. Enfom., Concord, N.H., xn, no. 2, April 1919, pp. 162- 

 165, 1 plate. 



Cage and greenhouse tests were made with a view to controlling 

 the emerging midges by means of 1 volume nicotine sulphate containing 

 40 per cent, nicotine to 500 volumes of water, with the addition of 

 one ounce of fish-oil soap to every gallon of solution. A table is given 

 showing the results ; these were successful provided that the plant was 

 completely covered with the solution and the spray repeated every 

 4 or 5 days as long as any living forms of the midge remained in the 

 galls. This spray does no damage to the plant. 



Hunter (W. D.). The Work in the United States against the Pink 

 Bollworm.— JL Econ. Entom., Concord, N.H., xii, no. 2, April 

 1919, pp. 166-175. 



The bulk of the information contained in this paper has been 

 previously dealt with [see this Review, Ser. A, vi, p. 543]. Although 

 Pectinophora gossypiella, Saund., has not been completely eradicated 

 in the United States, it has been reduced very nearly to vanishing 

 point. Owing to this fact and the present methods of control adopted, 

 a fresh infestation recorded in Texas does not detract from the hopeful 

 outlook. 



HoLLowAY (T. E.). Parasite Introduction as a Means of saving Sugar. 

 —Jl. Econ. Entom., Comord, N.H., xii, no. 2, April 1919, pp. 

 175-178. ^^ 



Investigations for the control of Diatraea saccharalis (sugar-cane 

 moth borer) have been carried on for many years in Louisiana, but 

 the work was interrupted owing to the war and to lack of funds. In 

 1918 funds were raised by the planters, and the author proceeded to 



