THE MELTING-POT 95 



its coat is a mixture of red hairs and white that 

 is, roan. The proportions of the two kinds of 

 hair vary greatly : the white hairs being sometimes 

 so few that the roan is almost a red, and the red 

 sometimes so few that it is almost a white. 1 



When roan crosses are bred together their 

 progeny select their colour determinant one half 

 from each parent, and the chances are one that 

 both halves will be red ; two that one will be 

 white and one red ; and one that both will be 



white. It may be a union of these -, or 



these or these or these 



O O O O O O* 



Consequently, from a sufficient number of mat- 

 ings, a quarter of the calves must be red, a half 

 roan, and a quarter white. 



Again, when red cattle are mated with roan 

 ones, one half their calves are red, the other half 

 roan. Combining the four little diagrams as above, 



><^ gives two reds , and two roans . 



Further, when white cattle are mated with 

 roans, one half their progeny are white, the other 

 half roan. >< gives two whites and two 



o o^o o 



roans 



1 White cattle with the black or brown " points " of the " wild " 

 park cattle behave as pure whites, and red and white flecked cattle 

 behave as pure reds. 



