FIGURES 50 TO 55 



50 Same, section 17. 



51 Hame, section 18. 



52 Same, section 19. 



53 Same, section 20. 



54 Same, section 21. 



55 Same, section 22. 



1 Syiiipatlietic nerve. 



8 Oesophagus. 



11 Jugular lymph sac. 



12 Jugular lymph sac, thoracic duel aj)proacii. 



16 Dorso-medial somatic venous tributaries. 



17 Preverl"I)ral venous plexus. 



21 Thymus. 



22 Vagus. 



23 Left carotid .■irlciy. 



24 Thyrocervical arlerj\ 



25 Internal jugular vein. 



29 Juiiulo-subclavian trunk. 



