FIGURES 266 AND 267 



266 Same, section 11. 



267 Same, section 15. 



1 Sympathetic nerve. 



2 Intersegmental arteries. 



3 Right azygos vein, thoracic portion. 



5 Extraintimal or perivenous lymphatic space surrounding degen- 



erating embryonal vein. 



6 Left azygos vein, thoracic portion. 



7 Aorta. 



15 Interazygos venous plexus. 

 36 Thoracic duct, azygos segment. 

 51 Mesenteric lymphatics. 



