52 



PIEBALD RATS AND SELECTION. 



Table 51. — Fi offspring of the original "tnutanl" viale, 4763,-^6^, mated with females of the 

 plus series, and with the "mutant^' feynale, 5153,-\-5\. 



Table 52. — Fi offspring of the original mutant male, 4763, -\-5\, viated with females 



of the minus series. 



