314 MICROSCOPIC ANATOMY OF THE TEETH 



and within the follicle. Epithelial coils are sometimes 

 present among the cells of this group. 



The third group of epithelial products, which is found 

 within the follicle itself, is chiefly derived from the enamel 

 organ and the buds which separate from it, but is also in 

 connexion with the cells of the intermediary group. 



It was shown both by Robin and Magitot and by Malassez, 

 that the external epithelium of the enamel organ does not 

 form a continuous investment, but in many places shows 



FIG. 203. Epithelial coil. (x!50.) 



openings or intervals penetrated by blood-vessels, which 

 thus come to lie upon the outer cells of the stellate reticulum 

 and in direct contact with them. 



The external epithelium is also seen to give off conspicuous 

 buds from its outer surface (fig. 205). It is thus seen that 

 the epithelial cells present in the follicle of the temporary 

 tooth and in the tissue which intervenes between this and 

 the mucous membrane of the gum are abundant, and, far 

 from degenerating, are proliferating in this situation. 



The broad band of epithelium which forms the neck of 

 the enamel organ, derived from the tooth-band, becomes 

 broken up as previously described (Chap. I), and the con- 



