CARIES DIFFEREiq^T IX DIFFERENT TEETH. 151 



To give precision to the diagnosis, the position of the 

 teeth should be taken into consideration. Besides the 

 symptoms common to all disorders of the teeth, caries 

 in general presents as diagnostic signs — 



" 1. A fetor very remarkable and sid generis of the 

 month, and of the saliva which hnmefies it. 



"2. Dribbling of an abundant and stringy saliva 

 from the mouth. 



" 3. Existence on one of the faces of the tooth, and 

 principally upon its crown, either of a blackish spot or 

 a large cavity of the same color, according to the ex- 

 tent of the disease. 



" 4. The extreme pain that the animal evinces when 

 the tooth is struck. 



'^If the disease is of long standing, and especially if 

 it has arisen from the side of the root, in addition to 

 the foregoing modifications and complications, other 

 and more special symptoms manifest themselves. The 

 bone tumefies and the animal evinces pain when it is 

 pressed by the fiugers ; the gums are affected with tnr- 

 gescence, and bleed from the least contact; all the 

 buccal mucous membrane reflects a red tint, and in 

 the meantime fever sets in, manifesting itself by all 

 its ordinary and general symptoms. 



'' Caries of the first and second upper grinders may, 

 as already explained, be complicated with lesions of the 

 nasal cavities. Then the pituitary membrane irritates 

 and secretes abundant mucosities, but at one side only, 

 with which the food becomes mixed, giving it a green 

 tint, but very different from the secretions of glanders. 

 The case is different, however, in the complications 

 induced by caries of the last grinders. In fact there 



