Different species of trypanosomata observed in bovines in India / by A. Lingard.

  • Lingard, Alfred.
Date:
1907
Catalogue details

Licence: In copyright

Credit: Different species of trypanosomata observed in bovines in India / by A. Lingard. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    ?!0 fc). Only one example of this attenuated form of parasite was observed in the blood. It measured 54'76/^ in length. Unfortunately in the preparation of this blood smear the parasite was injured, its posterior extremity being broken, so that the dimensions given do not represent its full measurement. The endoplasm is devoid of micro-granules, but the ble})haroplast and nutritive nucleus both appear to be undergoing division. A number of somewhat similar but intact forms were discovered in the })arenchyma of the spleen ; these will be described subsequently in this paper. In THU SrLEKN. The trypanosomic forms discovered in the spleen comprised— {a) A broad form of trypanosoma with well-marked liagellum. (PI. IT, Fig. 5.) (h) A large form of parasite, without any flagellum. (Plate II, Fig. 14.) (c) Involution foi'ins of trypanosomata. {(I) Elongated or attenuated forms, exhibiting micro- granules. (PI. II, Figs. 8, 9, 10, 11.) (a) A trypanosoma with fairly long posteri(.)i‘ extremity which tapers to a point, the body is broadest, just anterior to the situation of the l)lepharoplast, slightly narrowing until the junction of the anterior quarter with the posterior three-quarters is reached. It then quickly becomes narrower, until it terminates where the free flagellum commences. The ble})haroplast which is circular is situated close to the peri- plast and only occupies about |th of the diameter of the body at this situation. The nutritive nucleus situated a little posterior to the centre of the parasite is oval and lies in the transverse axis of the body. A few micro-granules are dotted through the endoplasm, es[jecially anteriorly. Tlie lemTh of the free flagellum is about one-flfth of the total len<Tth of the organism. A smaller example than the former (PI. II, Fig. 7), exhibits a much larger nutritive nucleus for its size, and a short and stunq)}^ free flagellum. (h) A flagellate very much resembling (a) is represented (Fig. 14). Tliis, liowever, possesses a shorter posterior ex- tremity and a more massive nutritive nucleus, but no free flagellum, for the body ])rotoplasm extended in the original.