PLATE II.

FIG. 5. SECTION OF HYALINE CARTILAGE.

FIG. 6. VERTICAL SECTION OF TOOTH IN SITU.

a. The enamel.

b. Dentine.

c. Mucous membrane of the gum.

d. Crusta petrosa.

e. Pulp cavity.

FIG. 7. VERTICAL SECTION OF ADULT TOOTH.

a. The enamel.

b. Dentine.

c. Pulp cavity.