JOHANSEN 



40' 



30' 



I 

 I- 



10" 



10° 20° 30' 



AMBIENT TEMPERATURE 



40' 



Figure 2. Relationship between body temperature and ambient temperature 

 for the lizard (Cyclodus sp.) and the monotremes, marsupials, and placental 

 mammals studied by C. J.l^artin (1903). The values for Bradypus from Sawaya 

 (1941). 



80 



