E. Robertson 



89 



Pedigree V illustrathtg a " nearly fulV relationship that seems to be of imich 

 the same value as a quite '•''full " relationship. 



Pedigree VI an unsuccessful strain so far. iVb. 109 ran her milk out so that no real 

 record could he kept. No. 137 Aas calved recently; she is more promising. 



6—5 



