26 
former having suffered from chronic phthisis and rheumatic 
arthritis, the latter apparently from the lack of a food suf- 
ficiently nutritious for its requirements. Such food it is, 
of course, extremely difficult to procure in this country, 
if we may form any estimate of its ordinary quantity from 
the habits of the animal in a state of nature. 
As is usually the case, the prevalent disease among the 
Old-World Monkeys was tuberculosis of one organ or 
another; while among the New-World Monkeys tubercle 
was far less frequent. 
The Ruminant animals, on post-mortem examination, 
were found to be more than ordinarily free from hydatid 
tumours in the liver; and intestinal parasites were remark- 
able for their absence in all the animals, indicating that 
their food was carefully selected and prepared. 
The Polar Bear deposited in the Society’s Gardens by 
Capt. Allen Grant'suffered from’a large ulcer on its palate, 
which, no doubt, was the cause of its persistently refusing 
food, and consequently not surviving. 
The very fine specimen of the King Penguin (Apée- 
nodytes pennanti), presented by F. EK. Cobb, Esq., on the 
18th of May, 1875, died on the 11th of August, 1875, from 
what is so frequently the cause of death among these birds, 
namely, acute inflammation of the walls of the interthoracic 
air-cells, which spread to the pericardium. 
The following memoirs and papers, contributed by the 
Prosector to the Society’s scientific publications in 1875, 
were mainly based upon specimens that had died in the 
Society’s Menagerie :—On the Kangaroo called Halma- 
turus luctuosus ~by D’Albertis, and its Affinities; On 
the Form of the Lower Larynx in certain Species of 
Ducks; On the Form of the Trachea in certain Species 
of Storks and Spoonbills; On the Disposition of the Deep 
Plantar Tendons in different Birds; On the Hyoid Bone 
of the Elephant ; Notes on two Pigeons, Janthenas leuco- 
lema and Erythrenas pulcherrima; Report on the Indian 
Elephant which died in the Gardens on July 7th, 1875; 
On the Structure of the Manatee. 
- 6. MENAGERIE. 
The number of animals belonging to the first three 
classes of Vertebrates living in the Society’s Menagerie at 
the close of 1875 was 2205. The corresponding number 
