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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    cells of the salivary glands, and discovered that they actually passed down the salivary ducts into the seat of puncture, thus causing infection in a fresh vertebrate host. Repeating Ross's researches and experiments with the parasites of human malaria and with mosquitoes of the geims Anopheles, Grassi, Bignami, and Bastianelli were soon able to prove that Hxmamoeha malarias, Esemamoeha vivax, and Esemomenas prsecox go through precisely the same transformations as Haimamoeba relicta within the body of their respective insect hosts. The assertion made by Grrassi that he had arrived at the demonstration of the mosquito-malaria theory quite independently of Ross's researches led to some misunder- standing as to the priority of the discovery ; but, if some of the Italian papers attributed to Grassi this discovery as well as the invention of mosquito-netting, it can be positively stated that no such misunderstanding prevails amongst men like Marchiafava, Celli, Bignami, and Bastianelli, all of whom have given full credit to Ross's work. The part taken by the Italians in the investigation and elucidation of the mosquito-malaria theory is certainly an important one, and the promptness and ability which they have shown in grappling with the consequent all-impor- tant question of prophylaxis is really admirable. The first in the prophylactic field was Prof. Celli, who, in 1899, started a series of experiments to test the best methods of protection against the malaria-bearing mosquitoes. Previous Experiments. The experiments made by the Italian physicians were quite conclusive, and proved beyond doubt the correctness of the mosquito-malaria theory as regards the parasites of human malaria. However, as a means of carrying full conviction to the mind of the general public throughout