462 



INDEX 



Embryology (continued) 

 Later stages, 42. 

 Monsters, 42. 

 Growth of fetus, 173 (T. 118, 119) (C. 20). 



Endocrine System, 124, 158. 

 Percentage of water, 124 (T. 86). 



Exercise (See also activity) 

 Under cage conditions, 18. 

 Miles run, 17 (T. 1). 

 Effects of, 18. 



Exocrine Glands, 124. 

 Exocrine System, 168. 



Eyes 



Age of closing, 17. 



Age of opening, 15: N. 338. 



Weight of, 207 (T. 144) (C. 31) : N. 375 



(T. 203). 

 Weight of lenses, 259 (T. 149). 



Fat, 55, 313 (T. 166). 

 Fatty acids, 199 (T. 138). 



Feces 



Weight of, 144-145 (T. 99-100). 



Feeding 



Endocrine glands. 

 Hypophysis, 166. 

 Suprarenal, 166. 

 Thyroid, 166. 



Fertility 



Influence of, 



Weight of mother, 27 (T. 7, 8). 

 Food and other conditions, 21. 

 Mortality at birth, 26. 



Fetus 



Crown-rump length, 172 (T. 119). 

 Weight increase after 13th day, 172 

 (T. 118) (C. 20). 



Food Intake, 150 (T. 107-109). 



Formulas 



Formula (1), 65. 



Formulas (continued) 

 Formula (2), 67. 

 Formula (3), 67. 

 Formula (4-61), 275, 282-297. 



Fossil Remains 



Mus Eattus, 7 (note 1). 



Ganglia (See Cells) 



Gastro-intestinal System, 122. 

 Missing organs, 122. 



Genetics 



Inbreeding, 34. 

 Coat color, 34. 

 Color pattern, 35. 

 Inheritance. 



of brain weight, 35. 



of suprarenal weight, 35. 



of body weight, 35. 

 Mutations, 35. 

 Acquired characters, 36. 



Gestation Period, 20: N. 336. 

 Lengthening of, 21. 



Glands (See under names of) 



Growth 



Of entire body, 

 in weight on length, 203 (T. 144) (C. 28) : 



N. 346 (T. 187) (C. 62). 

 in length on weight, 202 (T. 144) (C. 27) : 



N. 346 (T. 187) (C. 61). 

 Tail length on body length, 205 (T. 144) 



(C. 29): N. 347 (T. 187) (C. 63). 



Effect of temperature, 205 (T. 139) 

 Weight-length ratio, 178, 206 (T. 122) : 



N. 347 (T. 188). 

 Modifications of, 179. 

 Of entire body on age. 

 Before birth, 172 (T. 118, 119) (C. 20). 

 Birth to maturity, 174-177 (T. 120, 157) 



(C. 21, 22) : N. 342 (T. 185) (C. 59, 60). 

 "Standard" growth curve, 275 (T. 157) 



(C. 21, 22). 



Of parts on body weight. 

 Head, trunk and limbs, 181 (T. 123): 



N. 355 (T. 189). 



