GROWTH OF THE INNER EAR OF ALBINO RAT 



101 



The growth of the inner hair cell. The volume of the inner 

 hair cell table 67 (chart 34) increases with age up to twenty 



TABLE 70 



Weighted volumes of the inner and outer hair cells according to the turns of the 



cochlea 



Ratios 1- 12 clavs 

 1- 20 " 

 1-546 " 

 20-546 " 



1.3 

 1.3 

 1.2 

 0.9 



1.9 

 1.9 

 1.9 

 1.0 



2.9 

 2.9 

 2.9 

 1.0 



3.9 

 4.7 

 4.6 

 1.0 



TABLE 71 — Condensed 



Ratios of the weighted volumes of the inner and outer hair cells according to the turns 



of the cochlea 



days; to nine days rapidly, then slowly. Alter twenty days it 

 decreases slowly, as do the weighted volumes of the inner and 

 outer hair cells, and with fluctuations, is nearly the same after 



