PROSSEB 



2 

 3 



Figure 3.Precht'spattemsof metabolic acclimation in cold. Animal moved from 

 a high temperature (tj to a low one (t) and metabolic rate falls directly along solid 

 line. Rate remains at 4 ifno acclimation occurs with time (van't Hcff approximation); 

 rate rises to 2 if acclimation is complete. Pattern 1 represents over-compensation, 

 3, partial compensation, and 5, under-compensation or reverse acclimation. Modi- 

 fied from Precht, 1958. 



