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PHYSIOLOGY 



7. Respiration. Macleod ('07) has determined the CO2 output 

 at 30° C. for rats of about 170 grams in body weight, table 95. 



Cramer ('08) has made corresponding observations on rats 

 of from 40-60 gl-ams in body weight, table 96. 



Mean = 11.81 ± 0.030 



0- = 1.82 ± 0.021 



Txy = 0.38 ± 0.014 



77zy = 0.48 ± 0.013 



Txy - rxy = 0.094 =b 0.0096 



8. Metabolism. Percentage of glycogen in the liver. Normal 

 young albino rats of about the same size (75 grams) were kept 

 on a diet of bread and milk and the percentage of glycogen in the 

 Uver determined by the method of Pfliiger, (Cramer and Loch- 

 head, '13) table 97. 



Further observations showed that the glycogen content was 

 relatively high 3-5 hours after a meal, but after 15 hours fell so 



