71 



Cattle in Ruanda are suffering from a severe epizootic of trypanoso- 

 miasis. Tiie whole district is above an altitude of 4,600 ft., and 

 Glossiiia is non-existent there. The disease appears to have been 

 (luite unknown a few years ago, and seems to have been introduced by 

 infected mules during the war. The Ruanda trypanosome is patho- 

 genic to cattle, sheep, guinea-pigs, and probably equines as well. 

 It is polymorphous, has no free flagellum, and resembles Trypanosoma 

 console use and T. pecorum. Slomoxys is common at certain seasons, 

 and is believed to be the vector. Examples that had recently fed on 

 infected animals contained living trypanosomes in the gut, but the 

 parasites had disappeared on the following day. The saliva of the 

 fly is not injurious to the parasites. The latter were not seen on the 

 proboscis of the fly. 



WoLLMAN (E). Le Role des Mouches dans le Transport de Germes 

 pathogenes etudie par la Technique des Elevages aseptiques. — 



C. R. liehdom. Acad. Sci., Paris, clxxii, no. 5, 31st January- 1921, 

 pp. 298-301. 



Experiments with Calliphora vouiitoria, Liicilia caesar and house- 

 flies [Musca domestica] show that they may be infected with typhoid, 

 dysenteric or tubercle bacilli in the larval stage, in which case they 

 remain infective during the pupal stage. The pathogenic organism 

 is not, however, passed on to the adult, but these may become infected 

 by organisms adhering to the outside of the pupa. 



House-flies infected in the adult stage remain infective only for a 

 few days, if removed from the source of infection. The loss of 

 infectivity is probably mechanical. 



Ferrel (J. A.). Resultados de los recientes Esfuerzos para el Control 

 del Desarrollo de la Malaria. [The Results of recent Work in 

 controlling the Development of Malaria.] — Anales Dept. Nac. 

 Higiene, Buenos Aires, xxvi, no. 4, Julv- August 1920, pp. 253-262. 

 [Received 18th February 1921.] 



This article briefly describes the results of anti-malaria work in the 

 United States since"l913. 



Howard (L. O.). U.S. Bur. Ent. The House-Jly — Carrier of Disease. 

 — Ohio State Dept. Health, Columbus. Mav 1920, 16 pp., 11 flgs. 

 [Received 18th February 1921.] 



This pamphlet is one of a series on public health prepared by the 

 American Medical Association. It contains a brief description of 

 Musca domestica and of its life-history, and deals with preventive and 

 remedial measures. 



GoRGAS (W. C), Carter (H. R.) & Lyster (T. C). Yellow Fever: 

 Its Distribution and Control in 1920. — Southern Med. J I.. 

 Birmingham, Ala., xiii, no. 12, December 1920, pp. 873-880. 



Yelljow-fever areas have been enormously reduced in size and, 

 \vith the exception of the Yucatan Peninsula, those now existing are 

 well under control. The isolation of infected areas and anti-Stegomyia 

 work around them has reduced the areas of epidemics. The aetiologj'. 



