THE TEETH OF CARNIVORA. 393 



sockets (or even the teeth themselves) or two others, which 

 are for various reasons rather to be regarded as non-per- 

 sistent teeth of the permanent set than as milk teeth ; and 

 there are also small teeth sometimes to be met with behind 

 the molars, which seem to be rudimentary permanent teeth. 

 The teeth above alluded to may persist through life, and 

 probably often do ; but they are sure to be lost in macerated 

 skulls, as they have but little socket. Of the milk den- 

 tition four teeth have been traced in each jaw; they are 

 rudimentary, are lost about the time of birth, and corres- 

 pond in position to the more largely developed teeth of the 

 adult. Hence the question if those small rudimentary 

 teeth above alluded to are to be regarded also as milk 

 teeth which are long retained, or as rudimentary permanent 

 teeth ; at present this requires further elucidation. 



