48 



ANATOMICAL AND PHYSIOLOGICAL STUDIES ON 



toward the apex. In some cases, at six days, we have no interval 

 in the basal turn, but in the higher turns an interval gradually 

 appears and at the apical turn is largest. This table shows, 

 therefore, that the inner corner of the base of the inner pillar 

 cell lies at birth outward from the habenula perforata at an 



TABLE 15 Condensed 



Radial distance between the habenula perforata and the inner corner of the inner 



pillar at base on age 



average distance of 22 \L. At three days of age the inner corner 

 moves farther outward with the developing membrana basilaris 

 and the distance increases from the base to the apex. Between 

 three to six days this outward movement not only stops, but 

 reverses its direction, and at six days it often becomes zero in 

 the basal turn. Bottcher ('72) finds in the cat the following 

 values for this interval in \i (table 16). 



TABLE 16 



TABLE 17 



