100 



DR. C. F. SONNTAG ON THE VAGUS AND 



interval, and the others end in the extrinsic laryngeal muscles. 

 It does not commvmicate with the sympathetic. 



Text-figure 1. 



IZ. x.zn. 



The cervical and anterior thoracic parts of the vagus and sympathetic nerves in 

 Tamandua tetradactyla. Sg.h. -. branch of hypoglossal nerve to sterno- 

 o-lossus ; V-S : vago-sym pathetic cord. Other letters in text. The 

 nerves have been separated for demonstration purposes so that the super- 

 ficial and deep cardiac plexuses appear in line. 



The right rentrrent nerve (d) has the usual origin, course, and 

 relations. It communicates freely with the sympathetic (S) and 

 the superficial cardiac plexus, and is brought into communication 



