FACTORS INFLUENCING BODY TEMPERATURE 55 



Conclusions. — The loodj temperature of animals is 

 influenced by variations in metabolism, food, the transfer 

 of liquids, evaporation, insulation, glandular secretions, 

 the temperature of environment, and surface mass rela- 

 tions. The regulation of body temperature in homoio- 

 therms appears to differ from that in poikilotherms in 

 degree and somewhat in kind. In the former it is made 

 more rapid and effective by insulation, nervous control, 

 and better mechanisms for the chemical production of 

 heat and for cooling. 



