270 INDEX 



Charts 1-31 



1 . The growth of the fetus from the 13th to the 22d day of gestation 64 



2. Growth in body weight on age males. To 365 days 66 



3. Growth in body weight on age females. To 365 days 67 



4. Growth in body weight on age males and females. To 485 days 69 



5. Percentage weights of systems on age. Muscalature, ligamentous skeleton, viscera 



and integument 77 



6. Body length on body weight males and females 88 



7. Body weight on body length males and females 89 



8. Tail length on body length males and females 89 



9. Brain weight on body weight males only. Spinal cord weight on body weight 



males only 91 



10. Weight of both eyeballs on body weight males 92 



11. Weight of heart on body weight males 93 



12. Weight of both kidneys on body weight males 93 



13. Weight of liver on body weight males 94 



14. Weight of spleen on body weight males 95 



15. Weight of both lungs on body weight males 96 



16. Weight of blood on body weight males and females 96 



17. Weight of alimentary tract on body weight males 97 



18. Weight of thyroid on body weight males and females 98 



19. Weight of hypophysis on body weight males and females 99 



20. Weight of both suprarenals on body weight males and females 100 



21. Weight of both ovaries on body weight 101 



22. Weight of both testes on body weight 101 



23. Weight of thymus on age to 400 days 102 



24. Percentage of dry substance in the body as a whole and in the several systems liga- 



mentous skeleton, integument, viscera and musculature on age 178 



25. In terms of the dry substance of the entire body the percentage weight of the dry 



substance of the integument, viscera, ligamentous skeleton and musculature on 

 age 178 



26. Percentage of water in brain on age males. Percentage of water in spinal cord 



on age males 179 



27. Absolute weight of the more important chemical constituents of the brain on age 184 



28. Norway rat Body length on body weight males. (Graph for the Albino inserted 



for comparison) 199 



29. Norway rat Body weight on body length. Males and females 199 



30. Norway rat Tail length on body length. Males and females 200 



31. Norway rat Brain weight on body weight males. (Graph for Albino inserted for 



comparison) 



Spinal cord weight on body weight males. (Graph for Albino inserted for com- 

 parison) 201 



Chromosomes, Number of, 31. of bones, 181. 



Classification and Nomenclature, 7-10. of brain, 181-182. 



Composition, Chemical (See Water, per- of spinal cord, 182. 



centage of) Correlation, Coefficients of, 103. 

 of entire body, 180-181. 



