On the bursa Fabricii / by John Davy.

  • Davy, John, 1790-1868.
Date:
1866
Catalogue details

Licence: Public Domain Mark

Credit: On the bursa Fabricii / by John Davy. 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.

    7/10 (page 5)
    about six months old, the bursa, of an ovoid form, measured 1’2 by *7 inch. It was plicated, like that of the common fowl. Of two others, one four months old, one of about eight months, the bursa was about the same size as the preceding. XII. Common Buck.—Of one, a male hatched in March, the bursa was of a cylindrical form, 1'6 inch long by ‘4 inch wide. Its lining membrane was without plicee ; the apertures of the mucous follicles were conspicuous, and arranged in parallel lines. It contained some dark faecal matter similar to that in the intestine. Of another male, about three months old, the bursa was of a flask-like form/2*6 inches in length, *6 inch in width where widest; in structure like the preceding. It contained a turbid greyish fluid, in which were suspended granules and small globules. It was coagulated by nitric acid. Of a female, about a month older, of the same brood, the bursa resem- bled the last. Of another female, a little more than a year old, the bursa was very small; its cavity was not quite obliterated, nor was its opening into the cloaca closed. Of a male about two years old, no traces remained of a bursa. XIII. Water-hen (Gallinula chloropus).—Of a male shot in November, the bursa, of a flask-like form, was ’6 inch by *4 ; its cavity was small and without plicae. XIV. Common Coot (Fulica atra).—In a male shot on the 8th of March no bursa was found. XV. Common Gull (Larus canus).—The same remark applies to one examined in January. XVI. Woodcock (Scolopax rusticola).—In two examined, one in De- cember, the other in February, no traces of a bursa were found. XVII. Rook (Corvus frugilegus).—Of this bird thirteen specimens have been examined. In eight no traces of a bursa were detected ; from their appearance and the quality of their bones, it was inferred that they were a year or more old. In the remaining five a bursa was met with ; three were examined in May, two in August; all had the marks of young birds. Of one, which weighed 6132 grs., caught when not quite capable of flight, the bursa was nearly globular and about '7 by -6 inch; it was distended, as was also the cloaca, with a turbid fluid abounding in lithate of ammonia. Its inner surface was not plicated, but slightly pitted. Of the others, the bursa differed little from the last; it was somewhat smaller. In the bursa of one of these some flakes were found, consisting chiefly of lithate of ammonia. XVIII. Carrion-crow (C. corone).—Of a young male shot on the 21st of June the bursa was globular, very like that of the rook, about -7 inch in diameter ; it contained some flakes of lithate of ammonia. Of another, shot on the 30th of June, weight 6163 grs., the bursa was somewhat different in form; it was broadest at its base; it measured *9 by ’8 inch.