ADAPTATIONS TO TROPICS AND ALTITUDES 



39 



38 - 



Tr 



IN ^^ 



O 



C 

 36 f- 



35 



MID 4 



8 NOON 16 



20 MID 



Figure 9. Daily T response in the grey kangaroo ( Macropus major) . Closed 

 circles show ordinary temperature in a young animal; open circles in an adult; 

 squares represent active animals; other symbols follow heat exposure (See text). 



HOUR OF DAY 



Figure 10. The daily T cycle in Artibeus. Symbols show sample size, mean 

 value, 2 x standard error, standard deviation and range. 



399 



