some dental Rudiments in human crania. 



293 



these rudiments are of small size (cf. Figs. 3 and 4) and in no way 

 comparable in this respect to the additional premolars which are 

 described (see Tomes: Dental Surgery) as occasionally appearing 

 in front of the first molar teeth. Our observations further led us 

 to notice that small fossae or pits are not infrequent in the same 

 position as the rudiments where these are absent : such fossae 



presumably at one time contained small dental masses similar to 

 those we describe and they accordingly have been incorporated in 

 the record of the Table of Classification. 



It is also interesting to note that the rudimentary masses 

 occur (rarely however) in the upper maxilla between the first and 

 second premolars and in either case they may occupy positions 

 on the inner or the outer border of the alveolar margin, or both, 

 or positions of an intermediate nature. More rarely, we find indi- 

 cations of similar rudiments in the mandible. The fossae or pits 

 have a similar distribution. 



Turning now to the consideration of the first important 

 question, viz. the nature of these rudiments, we recognise that their 



21—2 



