ON THE MOTIONS AND SOUNDS OF THE HEART. 173 
In No. 18 (the Hyzna). Long obtuse first sound, short 
second sound. 
Some other animals were attempted, but without success ; 
viz., the Dzagetai or Wild Ass, the Rhinoceros, the Cas- 
sowary, and some others. As a general observation, the Com- 
mittee may state, that wherever the two sounds of the heart 
could be distinguished, the character of those sounds and the 
rhythm of the heart’s motions appeared to correspond with 
those of the human heart, due allowance being made for dif- 
ferences of size in the animals, differences of temperament, 
and the circumstances of excitement or of disease under which 
many of the animals laboured, when they were subjected to 
auscultation, &c. 
EXPERIMENTS OF THE COMMITTEE FoR 1839-40. 
In consequence of having been nominated to conduct the 
experiments on the motions and sounds of the heart for the 
current year, without being associated with any colleagues, I 
thought it desirable to avail myself of the assistance of such of 
my friends, including the other members of last year’s Com- 
mittee, as could attend, and I accordingly requested the co- 
operation of a considerable number of gentlemen known to 
the public; of these, several were enabled to attend on numer- 
ous occasions, and one of them, Dr. Boyd, on every occasion ; 
so that every observation and experiment has been participated 
in or at least witnessed by one, or, in most instances, several 
of the following gentlemen: 
Professor C. J. B. Williams. 
George Gulliver, Esq., F.R.S. 
John George Perry, Esq. 
Dr. G. Hamilton Roe. 
Dr. George Burrows. 
Charles Cochrane, Esq. 
Dr. Rutherford. 
Francis Kiernan, Esq., F.R.S. 
J. Liddell, Esq. 
Francis Samwell, Esq. 
Dr. Edwin Harrison. 
R. A. Stafford, Esq. 
Benjamin Phillips, Esq., F.R.S.. 
Dr. Robert Boyd ; 
