34^ CLINICAL VETERINARY MEDICINE AND SURGERY. 



This animal came to a standstill after trotting lOO yards. Left in 

 hospital the i6th September, 1895. 



Exercised in the riding school on the morning after arrival it almost 

 immediately began to roar loudly. Respiration soon became painful, 

 and dyspnoea so marked as to prevent it continuing. 



Operation was performed on the i8th. The animal was placed on 

 its back, the head firmly fixed in a position of extension. The region 

 of the larynx having been prepared by clipping away the hair, and 

 shaving and disinfecting the skin, the skin and subcutaneous muscular 

 layers were incised from opposite the body of the thyroid as far as the 

 second tracheal ring. After checking haemorrhage I opened the larynx 

 in the median line, dividing the crico-thyroid ligament, cricoid cartilage, 

 crico-tracheal ligament, and first ring of the trachea. The larynx was 

 then widely opened, and the left arytaenoid seen to be completely 

 paralysed. It remained motionless during both periods of respiration, 

 whilst the right moved to the normal extent. Having introduced into 

 the trachea a cannula padded with gauze I excised the left arytaenoid by 

 the method described in the preceding portion of the present work 

 (p. 31). With cutting forceps I also removed the greater portion of 

 the fragment of cartilage left by the bistoury opposite the crico- 

 arytaenoid articulation. Two rectangular tampons of gauze were 

 arranged side by side in the larynx, and three interrupted silk sutures 

 inserted to bring together the muscular layers and to fix the tampons. 

 The skin was also sutured and covered with a layer of collodion. On 

 rising the mare was placed in a box without litter. No food was given. 

 The evening temperature was 38*8° C. 



Next morning two of the sutures were cut and removed. The 

 dressing and the cannula were changed. After cleansing the wound 

 with tampons of wadding held in forceps the skin and muscular layers 

 of each lip were sutured together. The patient received and ate its 

 ordinary allowance of food. Swallowing was somewhat difficult, 

 especially in the case of fibrous food. Portions of the latter and of the 

 drinking-water escaped from the laryngeal wound. Temperature, 

 morning, 38*6° C. ; evening, 38-9° C. 



During the next three days difficulty in swallowing persisted ; a 

 little of the drinking-water escaped by the wound. Temperature, 

 morning, 38'5° C. ; evening, 39*3° C Particular care was taken in 

 cleansing the external wound. 



After the 23rd the difficulty in swallowing diminished. The wound 

 granulated over the entire surface. 



From the 24th to the 30th nothing particular occurred. The 

 wound suppurated slightly, and gradually contracted. Neither food 

 nor liquid passed through it. Temperature, morning, 37*9° C ; even- 

 ing, 38*3° C. From the 28th 2 to zh drachms of iodide of potassium 

 were given daily in the drinking-water. 



During the first week of October the animal showed signs of sore 

 throat, including discharge from both nostrils and cough. This, how- 

 ever, diminished, and during the following week disappeared. On the 

 i6th October the external wound had closed. 



On the 20th and 22nd the mare was exercised at a trot in the riding 



