54 DESCRIPTION OF AN INVERTED TOOTH. 



thought that the case might be one of hysteria, 

 and that it would be desirable to administer chlo- 

 roform, hoping that the jaw would then become 

 relaxed. Chloroform was accordingly administered 

 by Dr. Snow, and a screw applied for expanding 

 the jaw, but the opening did not exceed three- 

 sixteenths of an inch. I then had no hesitation in 

 putting in an elevator sideways, cutting through 

 the alveolar process, and bringing out the tooth 

 in that direction. The patient returned to the 

 country as soon as possible, and in three months 

 the jaw had entirely regained its original power of 

 extension and closing. The trismus had lasted 

 nine months, during which time the patient had 

 never been able to take solid food. The tooth 

 was considerably decayed. 



Mr. Tomes read the following paper : — 



Descrijpticm of an Inverted Tooth, and the conse- 

 quences ivhich its inversion entailed, considered 

 in relation to certain forms of Tumours of 

 the Jaw, 



I have been induced to bring before the Society 

 the details of a case, not only on account of the 

 unusual characters which it presents, but also on 

 account of its throwing some light upon a certain 

 class of tumours of the jaw, a characteristic fea- 

 ture of which is, the presence of a tooth concealed 

 within the tumour. 



It will have been remarked that the eruption 



