OPERATION OF RISODONTRYPY. 865 



at the expiration of that period I again filled 

 the tooth with wool, but this time densely, and 

 left it for forty-eight hours : on removal, it was 

 perfectly colourless and free from all odour. I 

 now proceeded to fill the tooth. I first intro- 

 duced a strip of gutta-percha, the size of the 

 bottom of the cavity, as a non-conductor, then 

 fitted very perfectly a gold cap. I commenced 

 the filling with a tolerably close pellet of un- 

 adhesive gold, somewhat larger than the cavity, 

 and which required some slight force to insert it ; 

 so that the whole cavity was filled, but not very 

 solidly. I now forced a small plugging instru- 

 ment on one side of it, enlarged the opening thus 

 made without disturbing the body of the gold, 

 and filled densely with adhesive foil. I repeated 

 this process to the other three sides, then con- 

 densed the gold in the centre, and finished the 

 filling at this point. I had very great difficulty 

 in making this filling ; the flow of saliva was 

 excessive, and frequently threatened to submerge 

 the gold : however, by one way and another, I 

 accomplished it. There was hardly any incon- 

 venience produced during the operation, and the 

 patient left perfectly satisfied. I directed him, 

 if he had the slightest uneasiness, not to let it 

 run into absolute pain, but to come to me at 

 once. 



So far so good. The case did well until April 

 4th. I then had a visit from my patient. He 



