THE 
VETERINARIAN. 
VOL. VI. FEBRUARY, 1833. No. 62. 
MR. YOUATT’S VETERINARY LECTURES, 
DELIVERED AT THE UNIVERSITY OF LONDON. 
LECTURE XXV. 
Laryngitis — Tracheitis — Roaring—The various Causes of 
Roaring — Treatment, 
INFLAMMATION is not long confined to the upper air- 
passages; other portions of the membrane are gradually involved. 
Here are several specimens of laryngitis. The membrane of the ary¬ 
tenoid cartilages, and of the whole ofthe larynx, are deeply ulcerated. 
We gradually lose the inflammation in the trachea, but the horse 
died from the effect of general irritation, the source or focus of 
which was in the larynx. 
Symptoms of Laryngitis. — It is only lately that laryngitis has 
been recognized and described as a distinct disease by the prac¬ 
titioner of human medicine. It is not, then, extraordinary that 
we have heard so little about it in the horse. Here is a proof of 
its existence in that animal, and as a distinct disease; but laryngitis 
has not been observed with sufficient frequency or care to enable 
me, so satisfactorily as I could wish, to describe its distinguishing 
symptoms. Its approach is often insidious, scarcely to be dis¬ 
tinguished from catarrh ; but with more soreness of throat, and 
less enlargement of the parotid glands. There are more decided 
and violent paroxysms of coughing than in common catarrh, at¬ 
tended by a gurgling noise, which may be heard at a little distance 
from the horse, and which, by auscultation, is decidedly referable 
to the larynx. The breathing is shorter and quicker, and evidently 
more painful than in catarrh ; the membrane of the nose is redder; 
it is of a deep modena colour; and the horse shrinks and exhibits 
great pain when the larynx is pressed upon. The paroxysms of 
coughing become more frequent and violent, and the animal 
appears at times almost suffocated. 
T'he value of Auscultation. —And now% gentlemen, permit me 
to direct your attention to that with regard to which veterinarians 
have been strangely silent—of the aid of which comparatively few 
avail themselves,—but which I have no hesitation in affirming to 
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