126 Veterinary Medicine. 



Dieckerhoff injects daily into the larynx a solution of i gram 

 iodine, 5 grams iodide of potassium and 100 grams distilled water. 



Jelkmann injects morning and night 2 grams chloride of mor- 

 phine, in 300 grams of bitter almond water, and claims the sub- 

 sidence of the fever in one day, and complete recovery in a few 

 days. 



Anech applies the agents in fine spray from an atomiser with 

 excellent effect. 



Tracheotomy. When suffocation becomes imminent not a 

 moment must be lost in performing tracheotomy. This operation 

 is always available in threatened suffocation from obstruction to 

 the passage of air in the nostrils and throat. 



Different methods of opening the windpipe have been resorted 

 to. One is by means of a cannula and trochar at least three- 

 fourths of an inch in diameter and about five inches long and 

 with two large oval orifices in the middle of the cannula, and on 

 opposite sides. This is made to transfix the windpipe with its 

 investing skin and muscles from side to side in the middle of the 

 neck, care being taken to pass it in the interval between two 

 adjacent cartilaginous rings. The trochar is now withdrawn 

 and the orifice in the cannula corresponding to the interior of the 

 windpipe, the animal is enabled to breath freely through the 

 tube. The cannula has only then to be secured in its place by a 

 tape carried round the neck. 



The more common plan is by introducing a tube through a 

 circular opening made in the trachea. For this operation are 

 needed scissors, knife with a thin narrow blade, needle and thread, 

 and tracheotomy tube. The common tube is about an inch in 

 diameter, four to five inches long bent upon itself so as to fit into 

 the trachea, and furnished, with a flat shields to slits in which 

 cords may be attached to fix it in its place. A second variety is 

 only long enough to reach into the windpipe. It is' provided 

 with a flattened shield externally and from its inner extremity 

 there projects downwards at right angles a plate curved so as to 

 adapt it to the form of the interior of the trachea. There is an 

 additional plate to fit into the upper part of the tube, provided 

 with two lips projecting from it at right angles ; the outer lip is 

 screwed to the shield after the tube has been introduced into the 

 wind pipe and the inner lip is thus fixed inside the ring of the 



