THE TEETII. 



235 



FIG. 61. 



the great vascular- 

 ity of this tissue; 

 the larger vessels 

 are deep, and run 

 tortuously in the 

 longitudinal direc- 

 tion; the arteries 

 and veins commu- 

 nicate by an im- 

 mense number of 

 looped capillaries, 

 as seen in the 

 drawing. 



The nerves of the pulp (Fig. 63, taken also from Mr. 

 Nasmyth) come from the superior and inferior maxillary 

 divisions of the fifth, accompany the artery, and are seen to 

 form a series of loops. The pulp thus seems to be consti- 

 tuted of blood vessels and nerves, surrounded by a very 

 delicate membrane. 



FIG. 61, A represents the different structures composing a tooth, a Pulp. 

 6 Dentine, c Enamel, d Crusta-petrosa, or cementum. 



FIG. 61, B represents the pulp cavities of the permanent teeth from vertical 

 sections. 



FIG. 61, C represents thepuJp cavities of the permanent teeth of both jaws, 

 from transverse sections at their necks. 



