308 DESCRIPTION OF PLATES. 



PLATE III, 



Exhibits the upper part of the Thoracic Duct, the Lymphatic 

 Vessels of the upper part of the Chest and Arms, and of 

 the lower part of the Neck. 



A, The neck. 



B, B, The two shoulders with the pectoral muscles turned 

 over them. 



c, c, The arms. 



D, D, The cut ends of the clavicles. 



E, E, The extremities of the first two ribs. 



F, F, The subclavian muscles. 



G, G, The ribs. 

 H, The trachea. 



i, The aorta ascendens. 



K, The aorta descendens. 



L, The trunk of the carotid, and subclavian artery of the 

 right side. 



M, The left carotid. 



N, N, The left subclavian artery. 



o, The vena cava superior. 



p, p, The trunks of the subclavian and jugular veins. 



Q, The right subclavian vein. 



R, The right jugular vein. 



s, The left subclavian vein. 



T, The left jugular. 



0, The thoracic duct passing on the right side of the de- 

 scending aorta K, behind the ascending aorta i, and behind 

 the lower part of the left carotid artery M, and then appearing 

 at b. 



b, The upper part of the thoracic duct lying between the 

 left carotid and the left jugular vein, and passing behind that 

 vein downwards and outwards towards the angle between the 

 left jugular and the left subclavian. 



c, The extremity of the thoracic duct entering the angle 

 between the left jugular and the left subclavian vein. 



