80 



70 



tr 60 



50 



UJ 



o 



X 40 



o 



z 



UJ 



30 



>- 



Q 

 O 

 CD 



20 



10 



10 15 20 25 



STOMACH WEIGHT (GRAMS) 



30 



35 



Figure 2. --Regression of liody length on stomach weight. (Standard deviation from 

 regression, which includes approximately two-thirds of the observations, are 

 indicated by the dashed lines.) 



