24 EVOLUTION OF BRITISH CATTLE 



times the cattle of these other colours were rare 

 enough to be of higher value. But the alien 

 colours can all be accounted for. The whites 

 were brought in by the Romans, the reds by the 

 English, the brindles were the result of another 

 importation, while the duns were one of the many 

 things for which we have to thank the Norsemen. 



