INDEX 



273 



Organs (See Growth of) 



Alimentary tract, 97. 



Blood (weight and volume), 96. 



Brain, 90, N 200-201. 



Eyeballs, 91-92. 



Heart, 92-93. 



Hypophysis, 98-99. 



Kidneys. 92-93. 



Liver, 94. 



Lungs, 95-96. 



Ovaries, 100-101. 



Pancreas, 56. 



Sense organs, 55. 



Spinal cord, 90-91, N 202. 



Spleen, 95. 



Suprarenals, 99-100. 



Testes, 101-102. 



Thymus, 102, 114. 



Thyroid, 97-98. 



Ovulation, 21, 31. 



Ova — distance from fimbria, 31. 

 Ova — diameter, 31. 

 Ova — volume, 32. 



Ovum (See Ovulation) 



Pancreas 



Size of cells and nuclei, 56. 



Parts (Larger Divisions of Body) 



Fore-limbs, hind-limbs, head and trunk 73- 

 75, N 195. 



Peritoneal Fluid 



Cells of, 41. 



Physiology (See Functions) 58-62. 



Puberty, 21. 



Rat 



Norway, 1. 



= Mus norvegicus, 1, 7, 8. 



= Mus decumanus, 7, 8. 



= Epimys norvegicus, 7. 



gray, brown, or sewer rat — Wanderratte 



(G.). 

 Surmulot, rat d'egout, (Fr.). 

 compared with Albino, N 191-193. 

 similar to European form, N 193, 194. 

 melanic variety, 14. 



Rat (continued) 



Norway — Albino = white rat 



= Mus norvegicus albinus, 14. 



= Mus norvegicus albino, 7. 



= Mus norvegicus var. albino, 7. 



= Mus norvegicus var. albus, 7. 



coat color, 9, 29. 

 compared with Norway, N 191-193. 



extracted, 9. 



Gametic purity, 9, 10. 



Inbred, 9. 



Laboratory animal, 1. 



Observations mainly for the first year, 2. 



Origin of variety, 14. 



similar to European form, 14. 



strains — local, 3. 

 House rat — black 



Mus rattus rattus (old English black 

 rat), 7, 8. 

 Ship rat (gray) 



Mus rattus alexandrinus, 8. 

 Albino of M. rattus, 8, 9. 

 M. n. albinus wrongly identified with Albino 



of M. rattus, 14. 

 Mus rattus X Mus norvegicus mutually in- 

 fertile, 14. 



Rattenkbnig, 15. 



Records, Early, and Migrations, 10-15. 

 Mus norvegicus, 12, 13. 

 Mus rattus, 11. 



Reference Tables, 2, 3. 



References to Literature — By Subject 



Classification, 10. 



Fossil remains, 10. 



Melanic variety, 14. 



Early records and migrations, 15. 



Rattenkonig, 15. 



Albino : 



Biology, 28. 



Heredity, 29. 



Anatomy, 56-57. 



Physiology, 61-62. 



Growth: 



in total body weight, 72. 



of parts and systems, 85. 



