CATTLE 353 



between the best and the poorest cow in almost any herd 

 is surprising. This difference is well shown in the fol- 

 lowing record of fifteen cows for one year in an Illinois 

 herd : 



This was an exceptionally poor herd, so poor that it 

 lost the owner $112.39 for the year an average loss of 

 $7.49 per cow. Either of the two poorest cows lost almost 

 as much as the best five made their owner. Even the best 

 cow of this herd is poor enough, but there is a difference 



