PLATE XX. 



Fig. 6. 



Formation of masses of calcoglobulin in enamel organ of lamb's tooth. 

 X 800. Stratum intermedium, b, Outer ameloblastic membrane, 

 c,. Inner ameloblastic membrane. D, Calcoglobulin masses. E, Enamel 

 globules from which enamel rods are formed, r, Dentine. 



'C- 



y. liiPRji 



-'nut^sufu' 



,-^ B 

 — C 



— E 



G 



Fig. 6. 



Section of developing tooth of human embryo. x 600. a, Reticu- 

 lum of enamel organ, b. Stratum intermedium, c, Outer ameloblastic 

 membrane, d, Ameloblasts. E,Innerameloblastic membrane, f, Forma- 

 tion of enamel rods by successive deposit of enamel globules, g, Dentine 



