ON THE MOTIONS AND SOUNDS OF THE HEART. 171 
the same time subjected to a new and interesting test, and, if 
sound, fully confirmed, but if defective, corrected; and in any 
event, that their future conclusions would be based on a 
greater variety of facts and a more comprehensive induction. 
The Committee therefore made arrangements for the purpose 
of yisiting the Zoological Gardens, and examining as many of 
the animals there as could easily be approached by strangers 
for the purposes of auscultation, &c. Before visiting the 
gardens, the Committee met at the Hunterian Museum, for 
the purpose of inspecting the preparations illustrative of the 
physiology of the heart that exist in that national collection, 
and were obligingly assisted in their search by Mr. Owen, 
Professor of Comparative Anatomy to the Royal College of 
Surgeons. With the aid of the anatomical data collected at 
the Royal College of Surgeons, the Committee there entered 
_at once on their examination of the living animals. Before 
‘stating any particulars of our observations, it is proper to say 
that, in our examination of the wilder animals, we were much 
indebted to Mr. Youatt, the distinguished veterinary surgeon 
of the establishment, without whose kind assistance it would 
have been out of our power even to have attempted anything 
in several instances. Even with Mr. Youatt’s aid, we found 
it extremely difficult, in many cases, to make satisfactory ob- 
servations; so that, in but a portion of the subjects was it 
found practicable for the whole of the Committee to verify 
results to their satisfaction. 
The animals sufficiently examined by all are distinguished 
in the following enumeration :—They are, 
1. The Ostrich. 
2. The Ourang-Outang. 
3. The Leopard. 
4. The Seal. 
5. The Balearic Crane. 
6. The Common Crane. 
7. The Brahmin Bull. 
8. The Puma. 
9. The Indian Antelope. 
Other animals examined to the satisfaction of some mem- 
bers of the Committee, were— 
10. The Elephant. 
11. The Dromedary. 
12. The Antelope. 
13. The Water Buffalo. 
14. The Giraffe. 
