Report on two experiments on the mosquito-malaria theory : instituted by the Colonial Office and the London School of Tropical Medicine / by Louis W. Sambon and George C. Low.

  • Sambon, Louis W.
Date:
1902
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Licence: In copyright

Credit: Report on two experiments on the mosquito-malaria theory : instituted by the Colonial Office and the London School of Tropical Medicine / by Louis W. Sambon and George C. Low. Source: Wellcome Collection.

Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.

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    Our researches on the subject were somewhat limited on account of the short time we were able to spare for such investigations^ and the difficulty we experienced in procuring the necessary material. The people of the locality were for the most part unwilling to let us examine their domestic animals^ and^ notwithstanding the rewards we offered, gave us no assistance in the capture of wild animals. The animals we were able to examine were captured by ourselves during our excursions. There was a great dearth of mammals and birds in. the region, and the hours in which we were able to be about were cer- tainly the least favourable for hunting. However, we managed to examine 188 reptiles, 33 amphibians, 24 birds, and 104 mammals. Lizards.—^oth Lacerta muralis and Lacerta viridis are- exceedingly common in the Roman Campagna. Both offer a great variety of colouring more or less in harmony with that of their special surroundings, L. viridis varies in colour from a pale yellowish green with white stripes along the sides of the back, to the most intense emerald- green studded with numerous black spots. L. muralis is of a light tawny colour on the yellowish sands along the sea-shore, and of a glossy black colour dotted all over with deep green spots in thick jungle. We examined 120 specimens of L. muralis and 25 specimens of L. viridix, and we found Hsemogregarina lacertarum in nine of the former and in one of the latter, Celli and Sanfelice,^ in 1891, examined 100 specimens of L. muralis and 20 specimens of L. viridis, but failed to find any parasites. The parasite found in L. muralis was no doubt that described by Labbe ^ and called by him Karyolysus lacertaricm. We noticed the small endoglobular phase and the so-called vermicule phase, which may be contained ^ A. Celli e F. Sanfelice.— Sni parassiti del globulo rosso nell' uomo e iie;jli aniinali, ' Annali fli Agricoltura lloma,' 1891. * A. Labbe— Parasites endoglobulaires du sang des vertebres, ' Arch. d& zoologie experim.,'Paris, 1894.