THE CIRCULATORY APPARATUS OF BIRDS. 737 



met with elsewhere than in the cervical region ; the former are abundant in 

 the viscei-a, and unite m such a manner as to form fioo thoracic ducts These 

 ducts commence at the coeliac trunk, and pass alon? the lower face of the hmo- 

 receivmg the lymphatics of that organ and those of the wings, and finally opeii 

 mto the jugular veins, a little in front of their union with the axillary veins 

 A transverse branch forms a communication between the two thoracic ducts 

 towards their terminatiou. ' 



