DEVELOPMENT OF THE TEETH 



263 



still cover the free surface of the enamel at the eruption of the 

 tooth, remains as the cuticular membrane of Xasmyth. 



The Outer Enamel Epithelium. The outermost cells of the 

 enamel germ are immediately in contact with the mesenchymal 



FlO. 221. A DEVELOPING TOOTH FROM AN INFANT'S JAW. 



a, papilla; 6, crown ; c, outer enamel epithelium. Ilematein and eosin. Photo, x 65. 



connective tissue of the primitive jaw. This connective tissue 

 forms, toward the end of the third month, an investing sheath or 



