41 



April 12, 1836. 



William Yarrell, Esq., in the Chair. 



Mr. Bennett directed the attention of the Meeting to a living 

 specimen of the brush-tailed Kangaroo, Macropus penicillatus, Gray, 

 which had recently been added to the Menagerie ; having been 

 presented to the Society by Captain Deloitte, Corr. Menib. Z. S. 

 He remarked particularly on the peculiarity of its actions, as com- 

 pared with those of the typical Kangaroos ; and especially on the 

 ease with which it vaults from the ground to any slight ledge, on 

 which it remains perched, as it were, with its tail extended behind 

 it : the tail, in fact, appearing to be in no respect aiding in the pro- 

 gression of the animal. 



Referring to some observations which he had made on the exhi- 

 bition of a skin of the same species, at the Meeting of the Society 

 on January 13, 1835, (Proceedings, partiii. p. 1,) he stated it to be 

 his intention to reduce into order his various remarks on the subject, 

 and to accompany them by a figure of the animal taken from the 

 living specimen. 



Mr. Owen read the following notes of the morbid appearances ob- 

 served in the dissection of the specimen of the Chimpanzee, Simia 

 Troglodytes, Linn., which lately died at the Gardens; and respecting 

 the habits and faculties of which some observations by Mr. Broderip 

 were read at the Meeting of the Society on October 27, 1835. (Pro- 

 ceedings, part iii. p. 160.) 



" Adhesions of the abdominal viscera to the parietes of the 

 cavity existed in many parts, but more especially of the ascending 

 colon and ccecum on the right side. On separating these adhesions 

 a purulent cavity was exposed, with which the ileum, near its ter- 

 mination, communicated by an ulcerated aperture about half an 

 inch in diameter. An abscess also existed between the lower end of 

 the ccecum and the peiitoneum, and the whole of the fundus of the 

 ccecum was destroyed by ulceration, together with part of the ver- 

 miform process ; the remainder of which was much contracted and 

 shrivelled, and was found adhering to the sound part of the ccecum. 

 The efficiency of the adhesive process in repairing, or at least pre- 

 venting, the immediate evil consequences of a solution of continuity in 

 the intestinal parietes, was remarkably exemplified in this instance ; 

 for notwithstanding the extent to which this had taken place, not 

 a particle of the alimentary matters had escaped into the general 

 cavity of the abdomen, nor was the mischief suspected until the ad- 

 hesions were separated. 



" On laying open the ileum it appeared that the original seat of 

 the ulcer had been a cluster of the aggregated intestinal glands ; 



No. XL. — Proceedings of the Zoological Society. 



