KLEIBER 



ENVIRONMENTAL TEMPERATURE 'F. (Simulofinq Irrfperiol Volley) 

 65 60 70 90 100 110 90 80 



9 12 15 If 



HOUR OF DAY 



(From H H, Kiblen and SBrody, Mo. Res. Bui. 601, 10, 19561. 



Figure 5. The diurnal change in a cow's body temperature with changes in 

 environmental temperature. 



250 



