70 



ANATOMICAL AND PHYSIOLOGICAL STUDIES ON 



same, 255 [x. He considers the holes of the habenula as a ' punctum 

 fixum. ' Bottcher ('69, 72) agrees with Hensen and gets in the 

 cat embryo and the adult cat the following values (table 43). 



TABLE 41 



Radial distance between the labium veslibulare and the habenula perforata on age 



(charts 17 and 18) 



Ratios 1 546 days 



9546 " 

 20546 " 



1.0 

 1.0 

 1.0 



TABLE 42 Condensed 



Ratios of the radial distance between the labium vestibulare and the habenula 

 perforata according to turns of the cochlea 



Comparing the results of both Hensen and Bottcher with 

 my own, the values obtained by Hensen are large, as would 

 be expected in the larger animal. The cat and rat however, 

 give similar values. We conclude, therefore, that broadly speak- 



