DISEASES OF THE RESPIRATORY ORGANS. 77 



Symptoms. — A more or less constant discharge from the nose, 

 foetid if long retained, and above all if from a diseased tooth, a 

 duUness on percussion on that side of the face between the 

 eyes or just beneath the eyes, and occasionally heat, tenderness, 

 and even swelling of these parts, especially below the eye. 



Treatment. — Trephine the bone to one side of the median 

 line of the forehead, in the interval between the eyes, and 

 again, an inch above the end of the bony ridge which extends 

 down beneath the eye, and wash out daily, at first with tepid 

 water, and finally with the injection recommended for the nose. 

 In the case of parasites these must be rinsed out. Sometimes 

 a slight collection of this kind will recover under injections for 

 the nose, and the persistent use of sulphate of iron or copper, 

 or other tonic. If there is a diseased tooth it will be recognized 

 Dy the dropping of food half-chewed, by the swelling and 

 tenderness around the fang of the tooth, and by the intolerable 

 foetor which clings to the fingers when a balling iron has been 

 placed in the mouth and the tooth examined with the hand. 

 Such a tooth must be extracted with large forceps, if already 

 loosened, or if not, an opening should be made upon its fang 

 with a trephine, and the offending tooth driven out with a 

 punch and mallet But there is much danger of injuring 

 important vessels and nerves unless the operator is thoroughly 

 conversant with anatomy. 



ABSCESS OF THE FALSE NOSTRIL. 



This is common in young horses, and appears as a slowly 

 increasing, inactive, tense round swelling in the outer part of 

 the nostril. It is so firm as to feel solid, but collapses at once 

 when opened. It should be laid open from within the nose 

 along its whole length and plugged with tow till the raw edges 

 have skinned over. 



