2 7 8 



E. H. HARPER. 



having the highest amount of the same color in the ancestry and 

 running down. The series run: 



Grays, 83 65 61 44 17 2 o 

 Blacks, 100 91 79 38 ( ) 14 o 



Comparing these series it is seen that the top class of blacks 

 comprises 100 per cent, of black individuals and, throughout, the 

 series runs higher than for the grays. This may be interpreted 

 as the result of breeders' selection either wholly or in part, a 



TABLE XV. 



SHOWING NUMBER OF BLACKS IN ANCESTRY OF 179 INDIVIDUALS, FOR THREE 



ANCESTRAL GENERATIONS. 



NOTE. a equals number in class ; b equals number of blacks. 



