A note on a new species of trypanosoma discovered in the blood of an Indian bullock at Singapore / by P. Scott Falshaw ; and notes by A. Lingard.

  • Falshaw, P. Scott.
Date:
1907
Catalogue details

Licence: In copyright

Credit: A note on a new species of trypanosoma discovered in the blood of an Indian bullock at Singapore / by P. Scott Falshaw ; and notes 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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    2 a film on the only slide available then, namely, a piece of window glass, which I carefully cleaned. I next day found the trypanosome in the specimen, had the bullock brought back, and made films, found nothing in a dozen ; same result on the 23rd, and also on the morning of the 24th. At midday the animal’s temperature dropped to 97*5° F., and it died at 2 p.m. Post-mortem, made at 4 p.m. Blood 0*5 c. c. from interior of heart, injected into the peritoneal cavity of a small dog. No enlargement of spleen, ecchymosis on peritoneum and pericardium. Microscopic examination of spleen smears, cerebro-spinal fluid, heart’s blood, peritoneal exudate, etc., failed to reveal any other parasites. Dog’s blood was exam- ined daily up to the 15th January 1907, with a negative result. Note on the Microscopical Examination of the Specimen of Blood forwarded. The blood film stained by the Leishmann-Bomanowsky method revealed the presence of the following parasitic forms on microscopical examination. (i) Two large specimens of trypanosomata (Fig. 1). (ii) Several erythrocytes with classical examples of Piroplasma bigeminum. (Fig. 2 j). (iii) Micro and macrogametes, the immature forms of a plasmodium found in bovines (h and i). (iv) A hpmamoeba. (vj A number of free, oval-shaped bodies (Fig. 2 a) and a few intracorpuscular bodies. (i) Trypanosoma N. sp.—Only two flagellates were discovered in the specimen of blood examined. The chief characteristics of which were as follows : the length of the parasites 72*98 and 84*47^, respectively ; the great distance existing between the blepharoplast and the tip of the posterior extremity, equal to 30*20 per cent, of the total length of the mean of the measurements, 78*72^ ; the small size of the nuclei, especially of the blepharoplast; the diaphan- ous structure of the body protoplasm, particularly of the undulating membrane ; the short free flagellum (8*20^) which