ALBINO RAT VISCERA, GLANDS, EYEBALLS: WEIGHTS 



109 



,08 



-.06 



200 



250 300 350 400 450 



Chart 9 Showing the weight of suprarenals of the albino rat according to 

 body weight. The observed weights are represented by 92 (Jackson) male rats, 

 below 50 grams in body weight, and 53 (Wistar) male rats, above 50 grams in body 

 weight; and 84 (Jackson) female rats, below 50 grams in body weight, and 29 

 (Wistar) female rats, above 50 grams in body weight. 



• Observed weight, male. O Observed weight, female. 



Calculated weight, male. Calculated weight, female. 



10. Hypophysis. Like the suprarenal glands, the hypophy- 

 sis also shows a distinct sex difference in weight. This appears 

 in rats weighing more than 50 grams. Consequently the growth 

 of this gland in weight is represented after 50 grams in body 

 weight by the two formulas, one for each sex. Weight of 

 hypophysis : 



Male = 0.0000257 (Bd.wt. +3) +0.00140 log. (Bd. wt. +3) -0.00097 

 Female = 0.00205 + 0.000081 Bd. wt. - 0.00196 log Bd. wt. 



[Bd.wt. >50] 



