52 



PIEBALD RATS AND SELECTION'. 



Table 51. — h\ offspring of the original "mutant" male, 4763, -\-5^, mated with females of the 

 plus series, and with the "mutant" female, 5153, -\-5\. 



Table 52. — 1<\ offspring of the original mutant male, 4763,-\-5\, mated with females 



of the minus series. 



