ENTOMOLOGY

390 SANITARY ENTOMOLOGYOtc'/Juris kunckeli Galeb is, according to De Magalhaes, found inPeriplaneta americana.It will be seen by the evidence presented that the cockroach is apotential carrier of many disease organisms, but, however, it has not yetbeen proven to be -definitely a regular carrier of wany. Those diseaseswhich you can most surely expect to be transmitted from time to time bycockroaches are those in which the organism can be taken up from thefeces of man or animals and carried by the roaches to food.You can also see that the danger from cockroach transmission ofdiseases is in small towns w~ere there is little care about sanitation, andwhere there is no sanitary sewerage. Anyone who has traveled extensivelyin the small towns of America can readily see how cockroaches couldtransmit diseases by polluting 'food in hotel kitchens and even diningrooms, and even by polluting the bread and food in the grocery storesand meat markets.Noone has really made a cortsjstent study of the possibilities of cockroachtransmission of diseases and there is very little doubt that, if suchstudies could be conducted in a locality where disease transmission is possible,much evidence against the roach could be obtained.REFERENCESBarber, M. A., 1914.-Philippine Journ. Science, Manila, vol. 9 B, No.1,pp.1-4.•Cao, G., 1906a.-Annali D'Igiene Sper., vol. 16, n. s., pp. 339-368.De Magalhaes, P. S., 1900.-Arch. de Parasit., vol. 3, p. 45-69.Fibiger, J., and Ditlevson, H., 1914.-Anat. Path. Inst. and Zool. Mus.Univ. Copenhagen, vol. 25, 28 pp., 4 pIts.Herms, W. B., 1915.-Medical and Veterinary Entomology, pp. 41-4:'3.Herms and Nelson, 1913.-Am. Journ. Pub. Health, September.Kiister, H. A., 1902.-Inaugural Dissertation Doctorwiirde Univ~ Heidelberg,43 pp.Longfellow, R. C., 1913.-Am. Journ. Pub. Health, January, p. 58.Northrup, Z., 1913.-Michigan Agr. Exp. Sta., Tech: Bull. 18, 32 pp.Ransom, B. H., and Hall, M. C •• 1915.-Journ. Parasitol.,.vol. 2, No.2,pp.80-86. .Seurat, L. G., 1916.-Bull. Scient. France et Belgique, ser. 7, vol. 49,fasc. 4, pp. 310-314, 350. -