DEVELOPMENT OF THE ENAMEL 183 



FIG. 100. Enamel organ of Sargus ovis showing vascular channels 

 alternating with secreting tubes. b. Blood-vessels of capsule ; c. secreting 

 cells ; s. stroma ; e. position of decalcified enamel. 



FIG. 101. Sargus ovis. Portion of fig. 100 more highly magnified 

 (upper portion). b. Blood-vessels of capsule ; c. secreting cells and tubes ; 

 b'. vascular tubes. 



