46 



HEREDITY IN RABBITS, RATS, AND MICE. 



Table 31. — Grade distribution of young sired by English male 2711, grade 4, generation 1, 



ancestor of all English in the selection series. 

 A. Mother English. 



B. Mother Self. 



Table 32. — Grade distribution of young sired by English male 6086, grade 4h generation 1 \. 



A. Mother English. 



