FIGUKIO 11»1 



101 Roronstnictidii of (■cplialic jiortioiis of azyfios veins and anlages of 

 azygos segment of thoracic ducts in a 15 mm. cat embryo; (series 219, slides 

 Xiv, XV, XVI and XVII), X 225. Ventral view. 



1 .Sympallu'tic nerve. 



