DEVELOPMENT OF THE ENAMEL 



191 



FIG. 108. Part of enamel organ of Halichceres (Labridae) showing secret- 

 ing tubes and blood channels, t. Tubes ; b. blood-vessels. ( x 500. ) 



FIG. 109. Portions of calcified enamel in stroma of enamel organ of 

 a Wrasse (Halichceres pocecilopterus). e. Enamel. ( x 150.) 



