182 THE DEXTISTHY' OF THE TEETH. 



tliera seemed not the slightest chance of gaining a 

 passage, I ordered the colt to be killed. 



" In dissecting the head I found that the cause pro- 

 ceeded from a decayed tooth, at the root of which was 

 a bag of matter about the size of a walnut, which by 

 no possible means could relieve itself." 



Surgeon Baker does not say which of the six teeth 

 (of course it was an upper grinder of the right side) 

 was diseased. The complications of the case appear to 

 have been unusual, otherwise the bag of matter would 

 have sooner or later found an outlet through the nos- 

 tril. The extraction of the tooth would have probably 

 afforded an outlet through the alveolus; this failing, 

 the effect of trephining the sinuses should have been 

 tried. 



Surgeon William Smith, of Norwich, Eng., reports 

 a case of caries of the roots of several grinder teeth, 

 accompanied by a discharge from the nostril, which 

 he admits he mistook for ozena. He says (" Veterina- 

 rian," 1850, pp. 381-2) : 



'' I was requested a few days ago to visit a horse 

 which was supposed to be ^glandered.' I found the 

 animal in a most emaciated and pitiable condition, 

 with a copious greenish and very offensive discharge 

 from the left nostril, with slight tumefaction of the 

 gland on the same side. There was no appearance of 

 ulceration, but the Schneiderian membrane had a 

 leaden, dirty hue. Taking all the circumstances into 

 consideration, I ordered the animal's destruction, but 

 had its head sent to my infirmary. 



"Meeting Surgeon Gloag, of the Eleventh Hussars, 

 I told him I thought I had a case of ozena. He ex- 



