SURGICAL TREATMENT OF CHRONIC ROARING — HEMIPLEGIA LARVXGIS. 349 



school. There was still a slight abnormal sound during inspiration, 

 but the dyspnoea and difficult}' in breathing, which had been so marked 

 before operation, had disappeared. 



The animal was returned to M. M — on the 28th October, and went 

 to work during the early part of November. It worked in a brougham 

 without interruption and without showing any difficult)' with breathing. 

 Eighteen months later the owner made the following statement : 



" Since leaving the school the mare has worked every day. For 

 the first three weeks breathing was still a little noisy, but during the 

 course of December this trouble disappeared, and since then I have 

 never heard any roaring, even in heavy work." 



54. An eight-year-old Anglo-Norman horse belonging to M. M — , 

 232, Faubourg St. Honore, Paris, left in hospital 13th June, 1896. 



Had commenced to roar about a year before. The difficult}' in 

 breathing gradually increased. At the time of entry the horse was 

 incapable of trotting work. 



Tested in the riding school it roared very loudly in a few minutes. 



On the 15th June it was operated on under chloroform, and the left 

 arytsenoid cartilage removed. A small fragment of the articular angle 

 was left. Dressing was carried out as in the first subject. Two hours 

 after operation the temperature was 3g'3*^ C, and in the evening 

 39'6° C. No food was given for the first twenty-four hours. 



Next morning the dressing and cannula were removed. The skin 

 and muscular tissues of each lip were sutured together. On returning 

 to its box the horse drank a bucket of water placed on the ground and 

 began to eat. It consumed all its food, though swallowing was a little 

 painful ; the meal was interrupted by attacks of coughing, and water, 

 oats, and fragments of hay were discharged through the wound. In 

 the intervals the horse appeared a little dull and depressed. Tempera- 

 ture, morning 39*1° C, evening 39*4° C. After-treatment simply 

 consisted in cleansing the external wound night and morning. 



On the 17th the depression seen on the previous evening had dis- 

 appeared. Temperature 38*4° C. Inspiration was difficult and noisy. 

 The margins of the wound were drawn apart. When eating a little 

 water and food escaped from the orifice. During the following da}'s 

 the difficulty in swallowing diminished, respiration became quiet, and 

 the temperature fell to normal. 



On the 22nd the muscular sutures were removed. Neither food 

 nor drinking-water passed by the wound. The lips were granulating 

 over their entire surface. Iodide of potassium was then commenced. 

 The wound gradually contracted. 



By the nth July the larynx had closed. On the 17th the wound 

 was entirely healed. 



On the i8th and 19th the horse was trotted in the riding school. 

 At the end of five or six minutes the inspiratory sound became marked, 

 but was very different both in character and intensity from that noted 

 before operation. During the first week of August the animal returned 

 to work in a brougham, work for which its roaring had previously 

 unfitted it. 



