Plate LXXII 



Fig. ioS. Photomicrograph of the parotid and orbitoparotid of the 35 milli- 

 meter embryo. Columbia Collection, No. 90. Horizontal section, 

 X IIS, reduced to 5. 



Fig. ioq. Schema of oral epithehum and glandular anlages of the left side of the 

 51 millimeter embryo. Columbia Collection, No. 104. From a wax 

 reconstruction. 



2. Angulus oris. 



6. Orbital inclusion. 



12. Parotid. 



17. Orbitoparotid sprout. 



iS. Orbitoparotid inclusion. 



20. Anlage of first orbital gland. 



21. Anlage of second orbital gland. 



22. Anlage of third orbital gland. 



27. Diastema! fold. 



28. Inferior alveolabial sulcus. 

 28a. Superior alveolabial sulcus. 

 2g. Lingual sulcus. 



30. Submaxillary gland and duct. 



jj. Greater sublingual gland and duct. 



J4. Efflorescent lobules of greater sublingual duct. 



38. Tongue. 



54. Inferior ma.\illa. 



65. Inferior dental anlage. 



