898 



The following specimens, to No. 5856 inclusive, illustrate the formation and succession of 

 the Human teeth, and are preserved on an ingenious moveable stand, invented by John 

 Hunter, in whose Work ' On the Teeth ' they are figured : 



Hunterian. 



5836. (1.) The right halves of the upper and lower jaws of a Foetus of five months, 

 showing the common alveolar groove which lodged the formative matrices of 

 the teeth. 



The inner wall of the groove is most developed : rudiments of the partitions appear at the 

 bottom of the anterior alveoli. 

 Op. cit. pi. viii. figs. 1 & 2. 



5837. (2.) The left halves of the upper and lower jaws of a Foetus of seven months, 

 showing the development of the inner wall to an equality with the outer wall 

 of the alveoli, and the more or less completed partitions of the sockets of the 

 incisors and canines. 



Op. cit. pi. viii. figs. 3 & 4. 



5838. (3.) The left halves of the upper and lower jaws of a Foetus of eight months, 

 showing the more nearly completed sockets : a large vacuity still remains in 

 the partition between those of the two molars. 



Op. cit. pi. viii. figs. 5 & 6. 



5839. (4.) The right ramus of the lower jaw of apparently the same Foetus : the 

 calcified germs of the two incisors and the canine are displayed in situ -. simi- 

 lar germs, with the calcified summits of the pulps, of the two deciduous molars 

 are separately displayed. 



5840. (5.) The lower jaw of a new-born Infant, or foetus of nine months. 



The two mid-incisors have cut the gum : the crowns of the outer incisor, canine, milk- 

 molars, and first true molar, may be seen through the openings of the formative sockets, 

 which openings are contracted above the molars. 



Op. cit. pi. viii. fig. 8. 



