157 is taking place with regard to the right upper premolar, which is erupting into the socket of the first permanent molar. The gum presents the reddish, somewhat denuded appearance described, which seems the flrst indication of the growth, although in parts it is reaching the nodular stage. The patient has been wearing a vulcanite block to bite upon ; the pressure from this seems to have arrested the development of the condition in one part. Remarks. ,