PART III 

 THE OUTGO OF ENERGY 



I ANIMAL HEAT 



Regional Temperature. Becord the tempera- 

 ture taken with a clinical thermometer placed 

 under the tongue, in the axilla, and in the 

 rectum. 



Effect of Hot and Cold Drinks on the Tempera- 

 ture of the Mouth. Record the temperature 

 taken under the tongue soon after drinking (1) 

 cold water, (2) warm water. 



Hourly Variation. Record the temperature 

 taken under the tongue every two hours through 

 the day and plot the results on clinical tempera- 

 ture paper. 



Reaction of Cold and Warm Blooded Animals to 

 Changes in the External Temperature. 1. Record 

 the temperature in the gullet of a frog placed in 

 water of varying temperature. 2. Record the 

 (rectal) temperature of a guinea pig in a bath at 

 40, gradually cooled to 15 C. 



Chemical Action the Source of Animal Heat. 

 Calculate the heat values observed by Rubner l 



1 RUBNER : Zeitschrift fur Biologic, 1894, xxx, p. 134 



