175 



food -with its feces. This work, however, has not heen 

 definitely confirmed "by other workers. 



Barher (191*0 and Toda (1923) have shown that cock- 

 roaches may he a factor in the spread of cholera. 



A description of Vibrio comma may he found in Bergey's 

 Manual (1939, 5th ed. , page 105). 



Barber, M. A. I91I* Cockroaches and ants as carriers of 

 the vibrio of Asiatic cholera. Philippine J. Sci. , 

 Sec. B. , £, 1-1*. 



Graham- Smith, G. S. 1910 Ohservations on ways in which 

 artificially infected flies ( Mus ca domestica ) carry 

 and distribute pathogenic and other "bacteria. Repts. 

 to the Local Govern. Board on Pub. Health and Med. Sub- 

 jects, New Series, No. 1+0, 1-1*0. 



Graham- Smith, G. S. 1913 Flies in relation to disease. 

 292 pp. , Cambridge University Press, Cambridge. 



Herms, W. B. 1939 Medical entomology. 3d ed. , 582 pp. 

 MacMillan Company,, New York. 



Howard, L. 0. 1911 The house fly; disease carrier. 3d 

 ed. , 312 pp. Frederick A. Stockes Co. , New York. 



Maddox, R. L. I885 Experiments on feeding some insects 

 with the curved or "comma" "bacillus, and also with 

 another "bacillus ( subtilis ? ) . J. Roy. Microsc. Soc. , 

 Ser. 2, 5, 602-607, 9^1-952. 



Toda, T. 1923 Cholera and the ship cockroach. J. Hyg. , 

 21, 359-361. 



Vibrio Leonard i Metalnikov and Chorine 



Insects concerned: The "bee moth, Galleria mellonella ; 

 the corn "borer, Pyrausta nuhilalis . 



Metalnikov and Chorine^ (1927, 1928) isolated Yihrio 

 leonardi from diseased corn horer larvae, and found it to 

 he very pathogenic to "both corn horer larvae and "bee moth 

 larvae. They found the insects very susceptible to in- 

 fection "by mouth, dying within 2k hours. 



These workers have given a description of the organism 

 (1927), and one may also he found in Bergey's. Manual, 5~th 

 ed. , 1929, p. 111. 



^■Metalnikov, S. and Chorine, Y. 1927 The infectious 

 diseases of Pyrausta nuhilalis Hb. Interna t. Corn 

 Borer Invest. , Sci. Rpts. , 1, 1*1-69. 



^■Metalnikov, S. and Chorine, Y. 1928 Maladies hacterien- 

 nes chenilles de la pyrale du mais. (Pyrausta nuhilalis 

 Hb.). Compt. rend. acad. sci. Fr. 186, 51+6-51*9. 



