FIGURES 73, 74 AND 75 



73 Same, slide IX, section 9. 



74 Same, slide IX, section 10. 



75 Same, slide IX, section 11. 



>'.' 



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. 



24 Thyrocervical artery. 



26 Common jugular vein. 



