40 



numerous. Cvlex spp. allowed to feed upon them at this time showed 

 «.n average of 36 zygotes each. When fed upon the blood of a bird 

 several days after the acute period of the fever when gametes are 

 rare, the Culex showed an average of 14 zygotes each, which is a 

 surprising number in view of the scarcity of gametes ui the host; 

 ^hile about a month after the acute period, when the blood parasites 

 are extremely scarce or non-existent in the host, newly-fed CuliciDCS 

 showed an average of 0'43 zygotes each. A graph illustrates the 

 intensity of infection in the bird and simultaneously the intensity 

 of gastric infection in the insect, and it is obvious that these do not 

 follow the same curve. It is evident that in malaria of birds the blood 

 of the vertebrate remains highly infective to the insect for a fortnight 

 after the acute stage of the fever is passed, in spite of the scarcity of 

 parasites in the blood. 



RoBLiN ( — ). Foyer de Paludisme autoehtone en Seine-et-Marne. — 



- — Bull. Soc. Path. Exot., Paris, xii, no. 9, 12th November 1919, 

 pp. 605-607. 



Cases of malaria contracted in France in a malaria-free region 

 are described, following upon the return to the locality of a soldier from 

 the Near East who had sufl'ered from the disease and had two relapses 

 after his return. In all cases the organism concerned was Plasmodiuin 

 vivax, and the tributary of the Seine that runs through the district 

 in question was found to harbour Anopheles macnli'penms. These 

 observations show that too much importance cannot be attached 

 to the return to civil life of individuals infected with malaria, in view 

 of the danger of propagation of the disease in Anopheline districts. 



M. Brumpt, in a note appended to this paper, records the fact that 

 together with the author, he has studied 20 cases of locally acquired 

 malaria, all caused by P. vivax and traceable to infection from the 

 French front. These observations will be published later, together 

 with records of 25 cases of relapses occurring in France as long as 

 450, 538, 702 and 771 days after infection with P. vivax. 



Parrot (L.). Trois Observations de Bouton d'Orient avec des Re- 

 flexions sur les Circonstances de la Contamination. — Bnll. Soc. Path. 

 Exot., Paris, xii, no. 9, 12th November 1919, pp. 607-611. 



Three cases of infection with Oriental sore are described on account 

 of their apparent confirmation of the hypotheses formulated by 

 MM. Sergent and others regarding the role played by the gecko and 

 Phlehotonms in the origin of the disease. In July 1918, eight females 

 of Phlebolomus sp. were captured in a locality on the Constantine 

 table-lands where Oriental sore is unknown and were placed in a 

 cage containing six geckos {Tarentola mauritanica) taken from a 

 known centre of endemic leishmaniasis. Ten days later the Phlebo- 

 iomvs were found to have escaped from the cage and subsequently, 

 before the end of November, the three persons forming the household 

 in which the cage was kept all developed the disease, though only 

 one of them might possibly have visited an endemic centre of Oriental 

 aore throughout the period. 



