86 



ANATOMICAL AND PHYSIOLOGICAL STUDIES ON- 



TABLE 58 



Anglt of (he lamina reticularis with the plane of Ihe membrana basilaris—in 



degrees, 6 (chart 26) 



AGE 



days 



1 



3 



G 



9 



12 



15 



20 



25 



50 



100 



150 



2 57 



366 



546 



Vertical averages 



Ratios 12— 20 days 

 12—546 " 



BODT WEIGHT 



grams 

 5 

 8 



11 



10 



13 



13 



29 



36 



59 

 112 

 183 

 137 

 181 

 255 



TURNS OF THE COCHLEA DEGREES 



II 



7 

 11 



15 

 14 

 15 



15 

 15 

 13 

 16 

 16 



13.7 



12 

 14 

 13 

 14 

 15 

 14 

 15 

 15 

 15 

 16 



14.3 



III 



13 

 13 



11 

 13 

 17 

 16 

 19 

 18 

 16 

 17 



15.3 



IV 



Average 



9 

 13 

 11 

 13 

 11 

 14 

 17 

 17 

 16 

 17 



13.8 



10 

 13 

 13 

 14 

 15 

 15 

 17 

 16 

 16 

 17 



1 : 1.3 

 :1.7 



TABLE 59 — Condensed 

 Ratios of the angle of the lamina reticularis with the plane of the membrana basilaris 



according to the turns of the cochlea 



TABLE 60 

 th> lamina reticularis with the plane of ihe membrana basilaris in degrees 



(Retzius) 



