Ross, Col Sir Ronald, (13 May 1857–16 Sept. 1932), Col RAMC (TFR), and late Consultant in Malaria, War Office; later Consultant in Malaria, Ministry of Pensions; Director in Chief, Ross Institute and Hospital for Tropical Diseases, Putney Heath, SW15 (T: Putney 3081 and 4039); late Physician for Tropical Diseases, King’s College Hospital; Past President Society of Tropical Medicine; Consulting Member Advisory Board, Indian Research Fund; Corr. Member Acad. Roy. de Belgique; Associate, Acad. of Medicine, Paris and Turin, and College Physicians, Philadelphia; Hon. Freeman, Society of Apothecaries of London; Fellow, Royal Society of Science, Upsala; Editor Science Progress

Parasitology ◽  
1914 ◽  
Vol 7 (1) ◽  
pp. 88-94
Author(s):  
J. F. Valladares

In no part of India, perhaps, are ampler opportunities available for the study of tropical diseases than in the Presidency of Madras. This will be borne out by the fact that quite recently the interesting discovery was made in the Madras Veterinary College Hospital of the existence in these parts of two distinct parasites, causing the protozoal biliary fever among horses. I propose in the course of this article to chronicle the details of my observations with regard to this discovery, feeling sure that they will be read by all Veterinarians with interest, though they may probably arouse a feeling of melancholy among lovers of horse flesh. There is no disguising the fact, that through lack of facilities for prosecuting the study of tropical diseases in Madras the Veterinary Profession has been greatly handicapped. It is therefore with no little satisfaction that we hail the announcement made by Sir Harold Stuart, member of the Executive Council of the Government, at a recent public function in Madras, that at no distant date there would be a fully equipped School of Tropical Medicine in the City.


The researches recorded in this paper were undertaken at the suggestion of Major Ross, who wished me to investigate the parasitological aspect of the numerical cyclical development discovered by him and Dr. D. Thomson (1910) in the trypanosome occurring in a patient suffering from Sleeping Sickness contracted in Rhodesia, particularly as regards the possible connection of the latent bodies of Salvin-Moore and Breinl (1907) with that cycle. The investigations have been conducted in the Liverpool School of Tropical Medicine, under a grant from the Tropical Diseases Research Fund. A complete and generally accepted life cycle of Trypanosoma gambiense has yet to be written. The following paper is offered as a contribution to the solution of this difficult problem, and deals with that portion of the life history of the parasite which takes place in a Vertebrate host.


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