Plate LXXIV 



Fig. 114. Schema of the oral epithelium and the glandular anlages in the 70 milli- 

 meter embr>'o. Columbia Collection, Xo. 270, From a graphic re- 

 construction. 



Fig. 115. Same embryo. Frontal section through the oritice of the parotid duct, 

 X 70, reduced to 3. 



Fig. 116. Same embryo. Frontal section through the first orbital duct close 

 to its orifice, X 70. reduced to 5. 



la. Secondary buccal sulcus. 



lb. Subparotid sulcus. 



2. .'Vngulus oris. 



6. Orbital inclusion. 

 12. Parotid. 



77. Orbitoparotid sprout. 

 ig. Stomal ridge. 

 iga. Glands of stomal ridge. 



20. First orbital gland. 



21. Second orbital gland. 



22. Third orbital gland. 



2j. Caudal members of the orbital series. 



24. Inferior alveobuccal glands. 



25. Superior alveobuccal sulcus. 



26. Inferior alveobuccal sulcus. 

 28. Inferior alveolabial sulcus. 

 28a. Superior alveolabial sulcus. 

 JO. Submaxillar^' duct. 



33. Greater sublingual duct. 



34. Efflorescent lobules of the greater sublingual duct. 

 36. Lesser sublingual glands. 



48. Lingual nerve. 

 36. Meckel's cartilage. 



