J 10 



PicoLLo (L..). Peste de Cadeiras. [Mai de CsideTSiS.]~Chacaras e 

 Quintaes, Rio de Janeiro, xv, no. 4, 15th April 1917, p. 315. 



In answer to an enquiry for a remedy against mal de caderas, which 

 is causing great loss among horses and mules in the State of Parana, 

 the specific called Protosan, discovered by Dr. A. Machado of the 

 Oswaldo Cruz Institute and obtainable through the Ministry of 

 Agriculture, Rio de Janeiro, is recommended. 



McArthur (C. L.). Farm Sanitation. — Univ. Arkansas Agric. Expt. 

 Sta., Fayetteville, Bull. no. 127, March 1916, 24 pp., 9 figs. 



This bulletin deals with general methods of farm sanitation, including 

 special reference to house-flies and mosquitos, with the usual recom- 

 mendations for their control and the elimination of breeding-places. 



Cleland (J. B.). Further Investigations into the Etiology of Worm- 

 nests in Cattle, due to Onchocerca gihsoni. No. 2. — Published by 

 Direction of the Minister of Trade and Customs, Commonwealth of 

 Australia, 41 pp. 



This paper records further experiments carried out on calves in 

 fly-proof pens and in the open, with the object of discovering the 

 vector of the embryos of Onchocerca gihsoni, the cause of worm- nests 

 in cattle [see this Review, Ser. B, iii, p. 207]. The results practically 

 exclude the probability of Stomoxys calcitrans being the carrier, and 

 suggest that transmission is due to Tabanids rather than mosquitos, 

 a view strengthened by the fact that the geographical distribution of 

 Tabanids coincides with that of worm-nests in cattle. 



DA Rocha-Lima(H.). Untersuchungen iiber Fleckfleber. [Eesearches 

 on Typhus.] — Miinchener Med. Wochenschr., Miinich, Ixiii, no. 39, 

 26th September 1916, pp. 1381-4, 3 figs. 



Only once in 13 experiments was typhus infection found to be 

 hereditary in lice. In this case larvae from eggs of lice fed on typhus 

 patients were ground up in salt solution and injected into a guinea-pig, 

 which became infected ; an injection of its blood also gave a positive 

 reaction in a second guinea-pig. In spite of numerous attempts it was 

 never possible to infect lice by feeding on typhus convalescents, so 

 that healthy persons are evidently unable to carry the virus. During 

 and after the fall of the temperature the virus is so scanty in the blood 

 that lice are usually unable to contract the infection. During the 

 febrile stage of the disease, one feed upon the patient suffices to infect 

 the louse. A feed upon a patient on the fourth day of the disease 

 causes infection by Rickettsia in the louse, but it was not possible to 

 ascertain if this is also the case for the first three days. On the fourth 

 day after the first feed, the presence of Rickettsia in the louse was 

 ascertained both by experiments on animals and by microscopical 

 examination. 



