GROWTH OF THE INNER EAR OF ALBINO RAT 



99 



increase and then decrease during the first twelve days. The rate of 

 decrease is largest in turn I, and smallest in turn IV, as the ratios 

 at the bottom of each column show. That the diameters at 



25 



50 



50 100 200 300 400 500 



Chart 37 The volume of outer hair cells, according to the turns of the 

 cochlea, table 67. 



the later ages have about the same value in each turn, or are a 

 little larger in the upper than in the lower turn, is to be seen 

 in table 73. 



