FIGURES 76, 77 AND 78 



76 Same, slide IX, section 12. 



77 Same, slide IX, section 13. 



78 Same, slide IX, section 14. 







1 Sympathetic nerve. 



8 Oesophagus. 



9 Trachea. 



12 Jugular lymph sac, thoracic duct approach. 



16 Dorso-medial somatic venous tributaries. 



17 Prevertebral venous plexus. 

 22 Vagus. 



24 Thyrocervical artery. 

 26 Common jugular vein. 



