760 EXPERIMENT STATION RECORD. [Vol. 37 



kill. Thus, liver of sulphur, used alone, has no fjreat controlling efTe<t on 

 American fiooseherry mildew but, combined with paraffin emulsion, has given 

 promising re.sults in a connnercial scale experiment undertaken by Barker and 

 myself. In the direction of insect control it also shows promise. While dilute 

 solutions of nicotin are without decided action on adult caterpillars or diffi- 

 cultly killed beetles, such as Byturus tometitosus, the raspberry beetle, it has 

 been found possible, at any rate on the small scale, to kill these by unitiDg 

 the same nlcolin solution with '_' per cent paraffin enmlsion." 



[Progress report of investigational work in entomology] (ilisaouri Sta. 

 Bui. 147 (lyiT), pp- S2-SJ0. — In dusting and spraying exi>erinient.s on field corn 

 for the control of the corn ear worm, by L. Haseman, six different treatments 

 were applied on an area of 2 acres on creek imttom land, but the worms were 

 so scarce that the re.sults did not justify the expen.se of application. One plat 

 dusted with 3 parts of arsenate of lead powder and 1 part of iKiwdered sulphur 

 showed a reduction in the infestation of 50 per cent, while another plat sprayed 

 with a solution containing 1 tablesiwonful of arsenate of lead powtler to 1 gal. 

 of water showed a reduction of 75 per cent, but on a plat of upland corn 

 numerous treatments did not appear to check the pest in any degree. 



Other work briefly reported upon includes investigations of the Hes.sian fly- 

 resistant qualities of diflerent varieties of wheat, by L. Haseman and C. Q. 

 Vinson, an account of which by Ha.seman has been previously noted (E. S. R., 

 35, p. 759); of insect pests of melon and relateil crops, by L. Haseman; of 

 insects injurious to nursery stock, by L. Haseman, K. C. Sullivan, and A. H. 

 Uollinger; and of the scale in.stvts of .Mis.sc>uri. by A. H. Hollinger. 



Report of the State entomologist on injurious insects and fungi of trees in 

 1914, T. 11. SciioYE.N (Indber. .\ornlci ^koyv., I'JIJ^, pp. 150-155, pi. 1). — Thia 

 report on the occurrence of important Insect enemies and fungus diseases in- 

 cludes an account of the damage cau.^ed to trees by mice. 



Preliminary account of entomological work in 1914, B. N. Zolotarea'skiI 

 (Predvaritel'nyl Otvhvt o Hahotakh po Kntumolof/ii v 1914. Stai^ropol: Selsk. 

 Khoz. Opiitn. Sta., 1915, pp. li). — This rei)ort deals with the occurrence? of the 

 more imiiurtaut insects of the year, particularly those attacking cereal crops. 



Some East African insects of economic importance, U. H. Deaki.n {.Ann. 

 Appl. Biol., 2 (19li'>\. .Vo. 4. pp. 241-244)- — Brief notes based upon observations 

 during a period of 18 months. 



Insect enemies of man and the household and the diseases they convey, 

 A. Beklesk (Itisttti dcllf Vase c dell' i'omu e ilalatiie che Difjondono. Milan: 

 Ulrico Hocpli, 1911, pp. XII+29S, figs. 100).— A small handbook. 



Household and camp insects, E. P. Felt (.V. Y. State Mus. Bui. 194 (.1917), 

 PP- f>4. /'.</«• 4^)- — This is a suuunary of information on insects of the household 

 and camp, particular attention being given to control measures. 



Studies on Coccobacillus acridiorum and on certain intestinal organisms 

 of locusts, E. M. Dul'oKTE and J. V.xnueklkck (Ann. Ent. Soc. Amer., 10 (1917), 

 No. 1. pp. 47-62). — Part 1 of this report of studies, made at McOlll University, 

 consists of experiments on the control of locusts by the use of C. aoridiorutn. 

 and part 2 of descriptive studies on C. acridioi-um and 16 related native organ- 

 isms. The results indicate that the biological metho<l for the control of the 

 locxist can not take the place of the measures now In u.se under the conditions 

 which obtain in eastern Canada. 



The pathogenicity of C. ai-ridionim was tested for all species of hx-usts 

 and gras.><hoppers, seven in number, conunonly occurring in large numbers in 

 the region. Gryllus pvnu.<<ylvanicus, one of the common field crickebJ. was 

 also found to be susceptible to the disease. The yellow bear caten>illar [ (Spilo- 

 soma) Diacrisia virginica] and the Colorado potato beetle, larvae and adults, 



