197 



DEL PoNTE (E.). Contribucion al Estudio del Gen. Triatonui, Lap. — 

 Rev. Inst. Bad., Bitcnos Aires, ii, no. 5, May 1920, pp. 729-744, 

 & iii, no. 1, January 1921, pp. 133-197, 15 plates. [Received 

 1st October 1921.1 



The genus Triatoma is abundant in Argentina and neighbouring 

 countries, and is of great importance owing to the fact that it is the 

 transmitting agent of American trypanosomiasis (due to Trypanosoinci 

 crnzi). 



This study includes detailed descriptions of the external and internal 

 anatomy of these Reduviids. An attempt is made to construct a 

 key to most of the known species with the aid of the descriptions of 

 several other authors ; forty-one species are recorded, the majority 

 of which are included in the key. 



Kraus (R.). La Fiebre Petequial en la Repiiblica Argentina (Prov. 

 de Salta). [T\-phus Fever in the Argentine Republic] — Rev. 

 Inst. Bad., Buenos Aires, iii, no. 1, January 1921, pp. 1-41, 

 6 maps, 34 figs. [Received 1st October 1921. 'j 



Previous to 1918 typhus was unknown in Argentina as an endemic 

 disease, though there had been two local epidemics in 1894 and 1896 in 

 Entre Rios, introduced probably by Russian immigrants. In 1919, the 

 author wrote an account [Rev. Inst. Bad., ii, no. 1] of the history and 

 epidemiology of the disease in South and Central America. In Mexico, 

 Peru and Chile it has evidently occurred for many years, endemic foci 

 remaining to the present day. In 1920, a delegation was sent to deal 

 with an alarming outbreak in the Provinces of Salta and Jujuy 

 [R.A.E., B, viii, 220]. As a result, many decrees and regulations 

 have been drawn up. Instructions are given for disinfection of houses 

 with carbon bisulphide. 



As the greatest obstacle in dealing with the disease is the total lack 

 of hygiene among the population, who are extremely poor and almost 

 entirely uneducated, efforts are being made to educate the public 

 in these matters. To prevent the spread of the disease to the capital 

 of the Province, a sanitary station has been established through which 

 all travellers coming from the infected zone have to pass and where 

 they are thoroughly disinfected and freed from lice. The campaign 

 must be continued for some seasons, but once the system is initiated 

 and well organised, the prevention of infection from neighbouring 

 countries and the extinction of endemic foci should be possible. 



Wernicke (R.). Ensayos con la Camara desinseetante de Hartmann 

 (Aire caliente eirculante). [Tests with Hartmann's Disinfecting 

 Chambers (hot circulating Air).] — Rev. Inst. Bad., Buenos Aires, 

 iii, no. 1, January 1921, pp. 41-48, 7 figs. [Received 1st October 

 1921.] 



The apparatus used in these tests is described and illustrated. 

 The Hartmann chamber differs from that of Vondran in that there is 

 no particular apparatus for causing circulation of the air, beyond 

 that produced by the draught set up by the combustion of naphtha, 

 which also gives rise to a certain amount of moisture in the air. The 

 conclusions drawn from the experiments are that the disinfesting 

 and disinfecting action of dry, warm, still air is in every way equal to 

 the same air in motion. The use of circulating steam, however, is 



