FIGURES 59, 60 AND 61 



59 Same, slide X, section 7. 



60 Same, section 9. 



61 Same, section 12. 



1 Sympathetic nerve. 



8 Oesophagus. 



9 Trachea. 



12 Jugular lymph sac, thoracic duct approach. 



14 Jugular lymph sac, subclavian approach. 



16 Dorso-medial somatic venous tributaries. 



22 Vagus. 



23 Left carotid artery. 



24 Thyrocervical artery. 

 26 Common jugular vein. 



30 Sixth spinal nerve. 



31 Primitive ulnar veno-lymphatic. 



