Volume 1

The prevention of malaria / by Ronald Ross ; with contributions by L.O. Howard [and others].

  • Ronald Ross
Date:
1910
Catalogue details

Licence: Public Domain Mark

Credit: The prevention of malaria / by Ronald Ross ; with contributions by L.O. Howard [and others]. Source: Wellcome Collection.

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    completed the task ; and I now turned to the subject of practical prevention. 6. Confirmations and Extensions.—My observations of the parasites in mosquitos were published by myself in a series of papers on 18th December 1897, 26th February 1898, 21st May 1898, 11 th October 1898, and 24th January 1899 ; and also, owing to official delay in regard to some of my reports, by Manson on 18th June 1898, July, and 24th September 1898. My paper [May 1898] contained a full account with plates of the necessary technique invented by myself, and of the stages of Proteosoma in the mosquito up to the sporulation of the zygotes—the mode of infection being published in the later papers by Manson (to whom I had telegraphed the news in time for the Annual Meet¬ ing of the British Medical Association at the end of July), and also by myself [October 1898]. Moreover, I had sent numbers of my specimens to him and to Laveran ; and, in fact, by August 1898 my researches were well known to most workers at the subject in Europe and America. The first to confirm them was R. Koch, with Kossel, who in September followed completely the development of Pro¬ teosoma in Culex nemorosus, and demonstrated a point which I had not had time to deal with, namely, how the zygotes traverse the wall of the insect’s stomach [1899]. In December, C. Daniels, sent by the Royal Society to examine my results, arrived in Calcutta and confirmed them [1899]. He and Dr Rivenberg also assisted me greatly at that time. Until my researches were published, the Italian writers had generally disbelieved in the mosquito hypothesis, though A. Bignami had accepted it on the lines of Lancisi and King. Now, however, they made strenuous efforts to follow; but they reached no tangible result until November, when Bignami, in the light of my experiments on birds, infected a man in Rome with mosquitos brought from Maccarese [November 1898]. A
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