394 



The Journal of Heredity 



CHAMPION LUCKY 



Black and white Cocker Spaniel owned by Pleasant Hill Kennels (O. B. Hark). Inv^estigation 

 of his pedigree showed that his formula was BE Be (class 3). According to theory, when 

 he is mated with a female of similar genetic makeup, the pups should be 75' o black and 

 25% liver. Five matings of this sort were recorded, and it was found that they resulted 

 in thirty-six blacks and twelve livers — an exact agreement with the calculated total. 

 By the law of chance, the results will not always come so close, when a small number is 

 concerned; but it is evident that much of the uncertainty surrounding dog-breeding will 

 be removed by the use of such Mendelian calculations as are described in the accompanying 

 article. (Fig. 5.) 



spla.shcs to the condition in which the 

 do^ is larj^^ely white, with a few scattered 

 marks of color. The method of inher- 

 itance is shown in the accompanying 

 summary of our records. 



Si)otting is dominant in this case as 

 in most cases so far studied, and is 

 apparently due to multiple factors, 

 which in their most perfect development 

 act as a single factor. The irregularities 



Table III 



