RELATIVE WEIGHTS OF ORGANS 



273 



"Ratio 



Z5 



50 SO lOO 



eoo 300 



0.5 



ao 



Ratio 



1.3 



1.0 



0.5 



Z5 



50 50 lOO 



200 



300 -400 



Ratio 



25 



50 50 lOO 



ZJQO 



JOO 



400 



0.5 



O.O 



Chart 49 — nos. 15-17. Showing the changes in the relative percentage weights 

 of the eyeballs, brain, and spinal cord — based on the data in table 156. 

 X X, males; o o, females. . 



