FIGURES 70, 71 AND 72 



70 Same, slide IX, section 2. 



71 Same, slide IX, section 5. 



72 Same, slide IX, section 6. 



1 Sympathetic nerve. 



12 Jugular lymph sac, thoracic duct approach. 



14 Jugular lymph sac, subclavian approach. 



22 Vagus. 



24 Thyrocervical artery. 



26 Common jugular vein. 



