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Show 206 MR. J. B. SUTTON ON DISEASES OF [*^Pr- ^0, of both animals. In course of time these hybrids were crossed again with Ovis vignei, and the third generation shows signs of degeneration from the larger sheep and of reversion to the type of O. vignei. "The skull of the half-bred animals, which the Tartars called Nyan Shapoo, the former being the name of the Ovis hodgsoni or Ammon, and the latter that of the Ovis vignei, is nearer in size to Ovis hodgsoni, which is double that of the other. The horns of these hybrids are rounded in front, resembling what has been figured of Ovis brookei, but hollowed out behind like those of O. vignei. The horns of the quarter-bred animal are square in front and hollowed behind like the true Shapoo-type, but are more massive than the purebred Shapoo. " Now as regards the colour of tbe skin, tbe Nyan or Ovis hodgsoni has no black beard or throat-stripe, which O. vignei has. The half-bred animal shows no black, but the quarter-bred does in a modified but decided degree. The half-bred turns also in summer to the colour of O. hodgsoni, having more of a blue-grey or lavender tint and less of the fawn colour of O. vignei; with the white throat of 0. hodgsoni, it also gets the dark patch at the side of the neck. The skin of a quarter-bred specimen before me is of a bright fawn above, sides and rump white, and a black stripe down the middle of the throat." Sir Victor Brooke was of opinion that Ovis brookei, Ward, P. Z. S. 1874, p. 143, was probably established on a somewhat similar hybrid. The following papers were read :- 1. O n some Specimens of Disease from Mammals in the Society's Gardens. By J. B L A N D S U T T O N , F.R.C.S., Erasmus Wilson Lecturer on Pathology, Royal College of Snrgeons, Lecturer and Assistant Surgeon to the Middlesex Hospital. [Received March 30, 1886.] During the past twelve months several specimens illustrating diseases of mammals in the Society's Gardens have come to hand. Some of them present features of such exceptional interest that it is desirable they should be placed on record. Of the value of the systematic examination of the bodies of wild animals dying in the Society's Gardens there can be no doubt whatever-not in the sense that it will enable us to deal with diseases occurring in them, but in the amount of light likely to accrue to pathological science in general if the investigation be carried on with the diligence and care it-: importance demands. The specimens to lie described in this paper are of value, inasmuch as many of them are somewhat rare in |
