DOMESTIC MAMMAL ADAPTATIONS 



2.0 

 1.9 

 1.8 

 1.7 

 1.6 

 1.5 

 1.4 

 1.3 

 1.2 



3.2 



3.3 



3.4 



3.5 



3.6 



RECIPROCAL OF ENVIRONMENTAL TEMR °K,=t=xlO^ 



39°C 



5°C 



Proc. Soc. Exp. Biol. Med. ii : 1 1 (1935) 



Figure 14. The Arrhenius equation for cow's respiratory frequency. 



265 



