DEVELOPMENT OF THE JUGULAR LYMPH SAC 



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Fig. 8 Diagram drawn from a reconstruction of the veins, jugular lymph sac 

 and nerves in a chick embryo of eight days and fourteen hours. Right side. 

 1, Precardinal vein; 4a, vertebral vein; 5, jugular lymph sac; 5a, the dotted oval 

 shows the position of the tap of the jugular lymph sac (see figs. 9 and 10); 9a, 

 brachial plexus; 13, thoracic duct; 14, subclavian vein; 15, subcutaneous lymphatic 

 duct. 



