DISEASES OF RESPIRATORY PASSAGES AND ORGANS. 97 
the larynx, the animal evinces signs of uneasiness, suffocation, and 
pain. Soon the mucous, schneiderian, and conjunctivial mem- 
branes become reddened, the eyes protrude, the tongue tumefies, 
and external tumefaction in the region of the throat may be ob 
served, Febrile symptoms are also present, manifested by cold- 
aess of the exterior and increased temperature of the interior 
parts. The nose appears dry, and the mouth is full of frothy saliva 
{sometin.es lymphy mucus), and some difficulty is encountered in 
opening the latter. 
History of the Disease.—The following case, from the author's 
aote-book, will probably prove interesting to the reader: The 
patient, a roan mare, aged seven. Temperament, lymphatic. 
Just arrived, in company with several other horses, from Ohio. 
The property of Mr. Banford, Merrimac stable, Boston. Our 
patient had been “ailing” some three or four days before our 
services were secured, at which time she was laboring cader 
“alarming symptoms” bordering on suffocation. The pulse was 
indistinct, small, thready, and difficult to aumber, yet prun=bly 
exceeded sixty. The breathing was croupy, or stertorous, and 
could be heard at a distance of several yards. The nostziis were 
dilated, and from them issued a lymphy discharge, mixed w ith traces 
of blood. The submaxillary space was somewhat tumef ed, nard, 
unyielding, and seemed to constrict the larynx and its associate 
muscles. The eyes were prominent, their membrane « ongested, 
and streaks of tears escaped over the inner canthus. ‘The flanks 
were bedewed with a cold, clammy perspiration. The tips of the 
ears were quite cold, and the limbs the same. Auscultation, 14 
the region of the larynx, revealed a very laborious and crepitating 
mucous raie. The trachea itself seemed to be free froma obstruc- 
aon. Thoracic auscultation elicited nothing tending * -how that 
the lungs were involved. 
The patient appeared to be in a deplorable, in fact dying, con- 
ation, making a sort of gasping effort to inflate the lungs. There 
was little time to spare; and being satisfied that the larynx 
was the seat of obstruction, we immediately cut down upon the 
trachea, about five inches below the thyroid cartilage, and ampu- 
tated, from between two rings of the trachea, a piece, of an oval 
shape, corresponding in size to the caliber of Arnold’s tracheotomy 
tube, which was the instrument used on this occasion. So soon 
as the opeuing into the trachea was effected, the patient experi- 
