FIGURES 12(i AND 127 



126 Same, section 7. 



127 Same, section 8. 



3 Eight precaval vein. 



4 .\Lrophying embryonal vein, forming kernol in iiitorior oi' (lo\ eloping 



and replacing lymphatic space. 



5 Extraintimal or perivenous lymphatic space surrounding degenerat- 



ing embryonal vein. 



7 Aorla. 



9 Trachea. 

 10 Pulmonary artery. 

 22 Vagus. 

 32 ^Vntral mcdiust inal venous ph'xus. 



