ALBINO RAT BRAIN IN MULLER S FLUID 



417 



TABLE 4 



The effect of inilial brain weight — albino rat — on the percentages of gain of brains 

 arranged in age groups, regardless of sex or litter 



initial weight 

 (gr.^ms) 



NUM- 

 BER OF 

 CASES 



AVER- 

 AGE 

 AGE 



24 

 HOURS 



IP. 

 O 



" « 



a b 

 w 



%^ 

 Z ai 



5 H 

 "* 6. 



AVERAGE PERCENTAGES OF GAIN 



7 

 days 



14 

 days 



30 

 days 



■■voS 



75 

 days 



c c g . 



C3 

 S a) 



Ik 



50 to 60 days 



60 to 70 days 



180 to 240 days 



* The percentages were obtained originally by the use of values carried to 

 three places. These have now been reduced to one-place numbers and there 

 are therefore some apparent discrepancies in the percentage-difference columns. 

 These differences, however, are not significant. 



