FIGURE 169 

 169 Same, section 44. X 200. 



1 Sympathetic nerve. 



4 Atrophying embryonal vein, forming kernel in interior of develop- 



ing and replacing lymphatic space. 



5 Extraintimal or perivenous lymphatic space surrounding degener- 



ating embryonal vein. 

 8 Oesophagus. 

 40 Innominate vein. 



