206 MR. J. B. SUTTON ON DISEASKS OF [-^Pl"- ^0, 



of both anitnnls. In course of time these hybrids were crossed again 

 with Ovis vignei, and the third generation shows signs of degene- 

 ration 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 Ouis 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 tliose 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 pure- 

 bred Shapoo. 



" Now as regards the colour of the skin, the 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. 

 18/4, p. 143, was probably established on a somewhat similar 

 hybrid. 



The following papers were read : — 



1. On some Specimens of Disease from Mammals in the 

 Society^s Gardens. By J. Bland Sutton^ F.R.C.S,, 

 Erasmus Wilson Lecturer on Pathology, Royal College 

 of SurgeonSj 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 ha^e come to hand. 

 Some of tliem 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 patliological science in 

 general if the investigation be carried on with the diligence and care 

 \i< importance demands. The specimens to be described in this 

 paper are of value, inasmuch as m.any of them are somewhat rare in 



