PULPS AND SACS OF THE HUMAN TEETH. 7 



form of a bulging (c), represented as turned aside to ex- 

 hibit the objects under it. The lobule (r) had increased 

 in size, so as to extend further backwards, and to appear 

 on the posterior lateral parts of the palate. The median 

 lobule (m) had become triangular, the anterior edge being 

 formed by the curve of the palate somewhat pointed in front, 

 the lateral edges being straight and meeting in an angle 

 behind, from which the median line of suture or raphe of the 

 palate proceeded. The median lobule (m) had increased re- 

 latively, the lateral lobules (n ri) only absolutely. The 

 posterior portion of the dental groove (&) was longer, wider, 

 and not so much curved. 



The bulging or papilla (1) was more distinctly isolated ; 

 and at the anterior extremity of the second curve in the ridge 

 (0), another papilla (2) had appeared as a production from the 

 latter. This papilla (2) was bounded externally by a lamina 

 (p\ which was also a production from the edge of the ridge 

 (o\ and was notched at its inner margin, where it was applied 

 to the side of the papilla. 



The dental groove then terminated in a point, at the outer 

 extremity of the lateral lobule (ri). There was a labial frenum. 



Lower Jaw. The posterior portion of the dental groove 

 had undergone no material change, 

 but had become deeper, and con- 

 tained in the situation of the ele- 

 vation marked (o, Fig. 5), a distinct ' ~~~ 

 rounded papilla (1, Fig. 7). Fur- 

 ther on, another papilla (2) bounded 

 externally by a notched lamina (a) 



had appeared. This combined papilla and lamina was 

 exactly similar in its configuration and relations to that 

 marked (2, Fig. 6). The anterior part of the groove 

 had become more distinct, not because it had acquired an 

 outer lip, but because its floor had risen above the level 



