ENAMEL 



99 



FIG. 52 Dentine and enamel of Macropus injected with fuchsin from 

 the pulp cavity, d. Dentine ; e. enamel. ( x250.) 



A B 



FIG. 53. A. Enamel of Macropus; tubes at enamel margin. Fuchsin 

 injected preparation, e. Enamel ; d. dentine. ( x 700.) 



B. Showing the escape of the fuchsin stain from the tube into the 

 surrounding imperfectly calcined fibrillar basis substance. ( x250.) 



