INDEX 



Activity 



Miles run, 20. 



Age 



Page numbers preceded by N refer to the Norway rat. 



Blood {continued) 



Oxygen capacity, 84. 



Percentage of water in, 40, N 211. 



Specific gravity, 39, 83. 



Volume, 83. 



Wandering cells in, 41. 



Weight of, 83. 



Characters which are functions of, 3. 



of opening eyes, 19, N 191. 



of independence, 19. 



of sexual maturity, 21, N 191. 



Span of life, 6, 20, 21, N 190. 



Body weight on, 31-33, 63-72, 105-113. 



Thymus on, 102. 



Percentage of water on, 114. 



Albino Rat (See Rat) 



Anatomy, 30-57. 



General, 30. 



Embryology, 30. 



Bones, joints and connective tissues, 33. 



Muscles, 38. 



Vessels and lymphatics, 39. 



Nervous system, 41. 



Sense organs, 55. 



Integument, 55. 



Gastro-pulmonary systems, 55. 



Uro-genital, 56. 



Endocrine, 56. 



Axis — of Nerve Fiber (See Nerves) 



Behavior 



under natural conditions, 28. 

 under experimental conditions, 28. 



Biology, 19-28, N 189-194. 



Blood 



Cell elements (number), 40-41. 

 Erythrocytes (diameter), 39. 

 Growth of, 83. 

 Hemoglobin, percentage of, 84. 



Body Weight (See Growth) 



on age, 31-33, 63-72, 105-113. 



on body length, 88, N 198. 



at maturity — according to sex, 27. 



Modified by external conditions, 69. 71. 



Net, 74. 



Variations in weight at birth, 103. 



Bones (See Skeleton) 



Brain (See Organs) 



Composition, chemical, 180-184. 



Growth, 90, N 200-201. 



Methods for fixation, 49-55. 



Water— percentage of, 6, 176-179, N 211-213. 



Mitoses in, 41. 42. 



Specific gravity, 41. 



Cell Division (See Mitosis) 



Cells 



Erythrocytes (diameter), 39. 

 Erythrocytes (number), 40. 

 Leucocytes, 40. 

 Wandering cells, 41. 

 of peritoneal fluid, 41. 

 of liver (diameters), 56. 

 of pancreas (diameters), 56. 

 of nervous sytem: 



Purkinje cells (diameters), 43. 



in ganglia (numbers and diameters), 44, 

 45,46. 



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