REPORTS OF CASES. 
73 
tilages, the seat of an osseous deposit, with anchylosis of their 
articulation. The flabby vocal cords were removed, the trache¬ 
otomy tube inserted, and the animal allowed to get up. The 
animal breathed much better, and after a few days the tube 
was removed and inserted into the trachea at the upper third 
of the neck ; the first wound was allowed to heal. 
The owner took the animal home, and was advised to remove 
the tube at least once a day and clean it and the wound,—oftener 
if necessary. He reported at times that the mare was doing 
well, doing her daily work, and stating that it was necessary to 
enlarge the opening in the trachea on several occasions. He 
brought the mare to the hospital ; she was seen to be in fair 
condition in the month of October, 1894. Then, to our great 
surprise, he brought us the trachea and larynx of the horse two 
or three weeks later, to be shown to the class and preserved as 
a specimen. He reported that as he had no use for the mare 
this winter, he had given her to some parties to keep. These 
parties had not followed the directions given as to the care of 
the tube, and had let the tube clog with mucus and filth. Thus 
the animal was forced to breathe through the larynx, which had 
grown more firm, besides atrophying and this breathing be¬ 
coming laborious, caused the mare to choke, throwing her into 
convulsions, at which the parties became very much alarmed, 
and had her destroyed. 
The specimen exhibits all the laryngeal cartilages more or 
less the seat of an osseous deposit, thickened mucous membiane 
and submucous tissues, atrophy of all intrinsic muscles, and 
anchylosis of all the articu.ations. The trachea exhibits at the 
point of opening a chronic inflammatory condition, with thick¬ 
ening of the mucous membrane, and infiltration with fibrous or¬ 
ganization of the submucous tissue. The post lace of trachea 
likewise exhibits a thickened condition of the tissues, at the 
point corresponding to the lower end of the tube. The thicken¬ 
ing, well defined, had caused considerable pressure on the 
cartilages when the tube was inserted, and thus cause a distortion 
in the shape of the organ. 
