WEIGHT OF CRANIUM: WILD NORWAY 357 



of fat in the Norway. At the same time there is other evidence 

 to show that for the same body weight as the Albino, both the 

 trunk and the viscera of the Norway are heavier, as here found. 



4. Weight of cranium. (Donaldson, 12 a). Determinations of 

 the weight of the cranium dried at room temperature have 

 been made. By the cranium is meant the skull with upper teeth, 

 minus the mandible with lower teeth and the ear bones. The 

 mean weights are given hi table 191. On comparing the values 

 here given for the wild Norway with those for the Albino, table 

 133, p. 195, it is evident that for a given body weight the wild 

 Norway has the heavier cranium. 



GROWTH IN TOTAL BODY WEIGHT ON BODY LENGTH AND GROWTH 



IN THE WEIGHT OF PARTS AND SYSTEMS OF THE BODY: 



REFERENCES 



Total body weight between birth and maturity on body length. Donaldson and 

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



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

 Growth of parts. Jackson and Lowrey, '12. 

 Growth cf systems. Jackson and Lowrey, '12. 

 Weight of cranium. Donaldson, '12 a. 



