kk 



bacillus to "be very susceptible to a "bactericidal principle 

 in the gut- contents of Stomoxys calci trans . 



As quoted by Herms (1939, P- 80), Proust in 189^ found 

 virulent anthrax "bacilli in the excrements of the hide 

 "beetle, Dermestes vulpinus , taken from goatskins, as well 

 as in the eggs and larvae. Similarly, in 189^, Helm found 

 larvae of Attagenus pellio, Anthrenus museorum, and Ptinus 

 to harbor virulent anthrax spores on their surfaces and 

 in their excreta. 



In the case of ticks, Martinaglia (1932) found anthrax 

 "bacilli to "be still via"ble 2^ hours after ingestion "by the 

 "blue tick, Boophilus decoloratus , "but the "bacilli eventual- 

 ly disappeared. Hindle and Duncan (1925) found that 

 Bacillus anthracis not only persists in Argas persicus 

 indefinitely "but is also passed in the feces at least up 

 to the hundredth day after an infective feeding. An in- 

 stance of the actual transmission of anthrax to man through 

 the "bite of Argas persicus has "been .recorded (Delpy and 

 Kaweh, 1937). 



For descriptions of other experiments on the role of 

 insects in the transmission of anthrax see Graham-Smith 

 (1913) and Nieschulz (1929). 



A complete description of Bacillus anthracis may "be 

 found in Bergey's Manual (5th ed. , page 697). 



Delpy, L. , and Kaweh, M. 1937 Transmission de Bacillus 



anthracis a l'home par Argus persicus Oken l8l8. Rev. 



de path, compared, ^7, 1229-123^7" 

 Duncan, J. T. 1926 On a "bactericidal principle present 



in the alimentary canal of insects and arachnids. 



Parasitol., 18, 238-252. 

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



292 pp. Cambridge University Press, Cambridge. 

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



The MacMillan Co. , New York. 

 Hindle, E. , and Duncan, J. T. 1925 The viability of 



"bacteria in Argas persicus . Parasitol. , 17, k^k-kk6. 

 Martinaglia, G. 1932 The fate of anthrax "bacilli in 



ticks from an anthrax carcass. J. Amer. Vet. Med. 



Assoc, 80, 805-806. 

 Mitzmain, M. B. 19±h Summary of experiments in the 



transmission of anthrax "by "biting flies. Hyg. La"b. 



Bull. No. 9h, pp. kl-h8. 

 Morris, H. 1918 Blood-sucking insects as transmitters 



of anthrax or chart) on. Louisiana Agric. Expt. Sta. Bull. 



No. I63, 15 PP. m 

 Nieschulz, 0. 1929 Uber die mechanische Ubertragung von 



einigen Bakterienkra.nkheiten durch "blutsaugende Insekten. 



Arch. Schiffs- u. Tropen- Hyg., ^3, 282-287. 



