Plate XVIII 



Fig. iS. Series 325, slide 16. row 2, section 8, X 80, reduced i. 

 Fig. 19. Series 325, slide 15, row 3, section 8, X 80, reduced J. 



/. Buccal sulcus. 



J. Orbital inclusion. 



8. Lingual sulcus. 



14. Alveolar sulcus. 



16. Intermediate sulcus. 



2/. Meckel's cartilage. 



2S. Superior dental anlage. 



JO. Lingual nerve. 



j2. Hypoglossal nerve. 



jj. Buccal nerve. 



J4. Ectopalatine sulcus. 



jj. Accessory ecfopalatine sulcus. 



