157 



he becomes tedious, and that which he would teach 

 is disregarded. Of course the symptoms vary : all 

 may not be present, yet one or more will lead the 

 practised mind to the seat of injury. The history, 

 however, which has been recorded, supposes the 

 dead tooth to be located in the upper jaw : should it 

 be situated in the lower jaw, some difference will be 

 presented in the effect ; for then the injury is not so 

 serious. The discharge from the nostrils does not 

 ensue, but the inferior maxillary bone enlarges, and 

 the breath becomes offensive. The swelling of the 

 bone takes place immediately under the tooth which 

 has ceased to be a part of the living frame ; and at 

 this point also an abscess forms ; this bursts, and 

 discharges an unhealthy matter : unlike ordinary 

 abscesses, however, which, when they have thrown 

 out their contents, close, this, notwithstanding that 

 the orifice is dependent, exhibits no disposition to 

 heal up : a thin stinking liquid continuously issues 

 from the opening, which becomes hard around its 

 edges, and the hair about which sticks out, looking 

 coarse and ragged. Such outward and visible signs 

 are hardly to be misunderstood ; and attention being 

 directed to the mouth, the examination of the teeth 



