376 



GEOWTH OF ORGANS IN RELATION TO BODY LENGTH 



TABLE 207 



Showing the weights {grams) of the sex glands — testes and ovaries — in the two sexes 

 of the Norway compared with those in the corresponding se.res of the albino rat 



Sex glands 



50 



100 



150 



200 



250 



300 



350 



400 



Chart 72 Showing the weight of the ovaries of the Norway compared with that 

 of the albino rat. 



Norway, observed ° o Albino, calculated 



Thyroid. On body weight the thyroid in the wild Norway is 

 similar in weight to that in the albino, save for the last entry 

 for the female. The sexes are alike. Table 204 and chart 68. 



Hypophysis. The data for the hypophysis are meagre, but a 

 they stand, they show the hypophysis of the male Norway a 



