FIGURE ISS 



188 Reconstruction of cephalic portions of azygos veins and anhiKe^' of 

 azygos segment of thoracic ducts in a 13.5 mm. cat embryo, (series 76, slide X, 

 sections 1 to 27; slide XI, sections 1 to 38; slide XII, sections 1 to 40; slide XTll, 

 sections 1 to 33; slide XIV, sections 1 to 7), X 225. Ventral view. 



1 Sympathetic nerve. 



3 Right azygos vein, thoracic portion. 



G I^eft azygos vein, tfioracic portion. 



