196 THE CANADIAN HOESE 



should be taken out of the pulleys twice a-day and gently 

 exercised, but the pulleys must be continued until the parts 

 have thoroughly healed, and he carries the tail in the man- 

 ner desired. 



TEACHEOTOMY. 



It sometimes happens that from the tumefaction of strangles, 

 the impaction of foreign bodies, and other sudden causes of 

 obstruction, the life of the patient is threatened from suffo- 

 cation ; it is found necessary to open the windpipe to avert 

 the untoward result, until the cause of the obstruction be 

 removed. 



It consists in making an incision through the skin and 

 muscles in the mesian line down on the trachea or windpipe, 

 cutting through two rings of this tube and inserting a bent 

 tube, which is usually made of block-tin, with a broad flange, 

 to which tapes or straps are attached to tie it round the 

 neck. It is usually employed to give temporary relief, but 

 we have known horses work with a tube in the windpipe for 

 years. It must be frequently taken out and cleaned. When 

 the cause of the obstruction is removed the tube is withdrawn, 

 and the edges of the skin being scarified, they are carefully 

 brought together, and treated as a simple wound. 



CESOPHAGOTOMY. 



In some cases where a foreign body becomes lodged in the 

 gullet, it is found necessary to cut down on it and remove it. 

 This is only to be undertaken by one thoroughly acquainted 

 with the anatomy of the part, otherwise the carotid artery, 

 jugular vein, and pneumogastric nerve are liable to be injured. 



This operation is only warranted as a dernier ressort when 

 all others have failed. It may be performed in the standing 

 position, but for greater safety it is preferable to have him 



