EXTERNAL EAR. 



delicate skin, and is curiously modelled. Its border, rounded 

 in its upper portion, and folded back on itself, forms the 

 rim or helix, and terminates at the lower portion in the lobe. 

 The concha is in the centre, and is bounded behind by the 



Fig. 42. Section showing the different parts of the ear. 



A. Pavilion, or projecting ear. 



B. External a^^ditory canal. 



C. Meinbrana tympani. 

 I). Tympanum. 



E. Incus, or anvil. 



M. Malleus, or hammer. 

 G. Semicircular canal. 

 H. Cochlea, or shell. 

 I. Ettstachian tube. 



antihelix, and terminates in the auditory canal. The pro- 

 jections of the tragus and antitragus, separated by an ellip- 

 tical slope, protect the orifice of this canal, and a down, 

 which might be called the lashes of the ear, sifts the air as it 

 passes into the organ. 



The pavilion of the ear is directed forward, projects from 

 the head, and its lines are in beautiful harmony with the oval 

 of the face. 



