FOEMULAS 297 



Spinal Cord Weight on Body Weight, Norway (Donaldson and Hatai, '11) 



Spinal cord weight (sexes combined) = 



0.724 log (Bd. wt. + 30) - 1.082 (60) 



To obtain the weights for the male the values given by the 

 formula are increased by 0.15 per cent, and to obtain the weights 

 for the female they are decreased by 0.15 per cent. 



Formula (60) with corrections mentioned above was used for 

 table 187. 



Spinal Cord Weight on Brain Weight (Sexes Combined), Norway 

 (Donaldson and Hatai '11) 



Br. wt.- 0.233 



Spinal cord wt. = 0.724 log (10 ^-^^s _^ 34) _ i_082 (61) 



For the Norway we have no extensive data based on age — 

 hence there are no formulas based on age. 



GROWTH OF PARTS AND ORGANS IN RELATION TO BODY LENGTH 

 AND IN RELATION TO AGE! REFERENCES 



Introduction. Chisolm, '11. Donaldson and Conrow, '19, Sugita, '17. 



Bodtj length relations. Donaldson, '06, '09. Donaldson and Hatai, '11. 

 Ferry, '13. 



Body length on body -weight. Donaldson, '09. Donaldson and Hatai, '11. 



Body weight on body length. Donaldson, '09. Donaldson and Hatai, '11. 

 Jackson and Lowrey, '12. 



Tail length on body length. Przibram, '22 a, '22 b, '22 c, '22 d. Przibram 

 and Wiesner, '22. Przibram, '23. 



Organs ivith early rapid growth — Brain, cord, eyes. Donaldson, '08, '09, '11, 

 '11 c. Donaldson and Hatai, '11 a. Donaldson, '12. Donaldson, Hatai and 

 King, '15. Donaldson, '17, '18, '18 a. Donaldson and Nagasaka, '18. Hatai 

 '07 a, '08, '09 a, '13 a. Jackson, '13. Watson, '05. Ziehen, '06. 



Weight of parts of brain. Hatai, '13. Jackson, '13. Stewart, '18 a. Sugita, 

 '17. 



Organs with a nearly uniform growth. Chisolm, '11. Degener, '22. Hatai, 

 '13, '14 a, '18. Jackson, '13. Jolly and Stini, '05. Kittelson, '17, '20. Rous 

 and McMaster, '24. 



