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ALBERT KUNTZ 



Fig. 4 Human embryo, 14 mm. in length, 511 — 9 — 1 — 2X80. Sagittal section 

 showing trachea and upper portion of heart. To be compared with figure 15. 

 CP, portion of cardiac plexus; T, trachea; VB, vagus branch to heart. 



Fig. 5 Human embryo, 10.1 mm. in length, 623—13—2—2X120. Oesophageal 

 plexus in transverse section. To be compared with figure 19. OEP, cell-masses 

 in oesophageal plexus; 0, oesophagus; VB, vagus branches. 



Fig. 6 Human embryo, 10.1 mm. in length, 623 — 11 — 2 — 4. Transverse sec- 

 tion through lungs. To be compared with figure 20. B, bronchus ; 0, oesophagus ; 

 OEP, cell-masses in oesophageal plexus; PP, cell-masses in pulmonary plexuses; 

 VB, vagus branches. 



