MAMMALIAN COLD ACCLIMATION 



40 



38 



36 



'5 

 IN 



40 



38 - 



36 



42 1 







V 



• • )• • 

 • • 



• .•• 



i L 



J I 



i 



0'Cf?OSTONYX 



LEMMUS 



-20 -10 



iO 



T^ IN °C 



Figure 16. Body temperature in Dicrostonyx and in Lemmus as a function of 

 ambient temperature. Symbols as in Figure 14. 



235 



