360 AVERS. 



EXPLANATION OF PLATE XIL 



Fig. I. A view in perspective of a portion of the mammalian cochlear organ 

 — organ of Corti. The details are those of the human and Rabbit ears. The figures 

 of the preceding plates render explanatory letters unnecessary. 



The hair cells are seen in various conditions, those in the section having their 

 histological detail sketched in. The hair filaments are represented in some of the 

 more important and usual conditions. Their normal relation to the sense cells is 

 shown by the last row of hair cells. Many minor details of cochlear anatomy are 

 left out to secure clearness of the picture, which is true to nature as far as it goes, 

 and disputed points which have no definite and positive solution in my investigations 

 are not introduced. X about 1500. 



