that in both the short and long fevers the symptoms were so much 

 alike and occurring at the same season that he is convinced that 

 they are one and the same disease. He thinks it worthy of note 

 that a regiment of Pathans, who come from the sand-fly fever 

 X)ait of India, were much more heavily infected than the South 

 Indian Eegiment, from which it seems probable that sand-fly 

 fever confers no immunity against Calcutta fever, and the truth 

 may be that the two diseases occurred at the same time and place, 

 and that clinical observation alone is not sufficient to distinguish 

 .3-day dengue from 3-day sand-fly fever. The author says that 

 the commonest biting insects during the period of g-reatest pre- 

 valence of the disease were Anopheles rossi, Culex impellens, 

 €. fatifjans, Stegomyia Scutellaria and S. fasciata. Other mos- 

 quitos found were Stegomyia (Desvoidea) ohturhans, Culex con- 

 color, ToiVorhyncJiites immisericors, Cvlex (Leuconiyia) gelidus, 

 Culex microannulcitus, Mansonioides ii n nidi f era, and Muc/dus 

 scatop/i agoides . 



A feAV sand-flies Avere taken, but these insects were not A-ery 

 numerous or troublesome in malarial areas in Calcutta. No 

 ridehotomus papatasii were found ; only P. minutus and P. argen- 

 tipes. Biting Chironomids which fed on man were also met with 

 and were not uncommon during the period when dengue was most 

 prevalent. These insects can pass through an ordinary mosquito 

 net, as indeed can some mosquitos, for example, Stegomyia 

 scutellaris. The disease met with in Calcutta is extraordinarily 

 local in prevalence. Stations within 10 miles or so of the city 

 are said to be almost entirely free. 



Beach (Lt.-Col. T. B.) & Leesox (Capt. H. H.). An outbreak of 

 Malaria in "F " Company, 2nd Devon Regiment. — Jl. R.A.M.C., 

 London, xx. no. 4, 13th April 1913, pp. 450-452. 



The interest of this. paper lies in the fact that it establishes 

 beyond doubt the period of incubation of the aestivo-autumnal 

 type of fever under the given conditions. On the march from 

 Troodos to Limasol, in Cypi'us, the company bivouacked at a 

 place called Zeegoe on the night of October 1st. <Jn 2Tth and 

 29th September, before leaving Troodos, every man received 

 10 grains of quinine. The place of bivouac was greatly infested 

 with mosquitos and most of the men complained that they were 

 severely bitten that night. The next day they reached Limasol 

 and embarked for Alexandria. During the stay of the company 

 in Cyprus only one man contracted malaria. For 11 days after 

 arrival in Alexandria the health of the company was good, but 

 from October loth cases of fever began to occur and by the 

 ITth 17 cases had been admitted to hospital. 



There can be little doubt that the disease was contracted on 

 the evening and night of October 1st, and this is interesting as 

 showing very definitely the period of incubation. There was 

 evidence of previous infection (malarial pigment, etc.) in one case 

 only, that of the single soldier who contracted fever at Troodos. 



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