FOUR PERMANENT FIRST MOLARS. 



55 



the left under first molar. From the time of the 

 first operation, up to its removal on the above date, 

 it was a constant source of pain and annoyance. 



THIRD CASE. 

 Fig. 1, representing upper and under arcli. 



a a a a. Diseased molars. 



^, Molar removed March 20th, 1 854. 



c, Molar removed June 15th, 1854. 



«?, Molar removed June 20th, 1855. 



E, Molar removed November 12th, 1857 ; the second bicuspid 

 having made its appearance at the age of fourteen, and after 

 this Paper was sent in to the. Odontological Society. 



Fig. 2 



Upper and under arch after operation. 



On examination of these casts, it will be seen that 

 two of the bicuspides are wanting. Whether this is 



