D. D. WH1 PNEY. 



of these three races before they were all conducted in the parallel 

 series is recorded in Table T. The percentage of male-producing 

 females of races A and B are practically equivalent, while that 

 of race C is much lower. 



TABLE 1. 



Showing the number of female- and male-producers in the three races .4, B, 

 and C, from their origin to the time at which parallel records were taken. Female- 

 producers are designated 9 9 , male-producers c? 9 



September 3, 1909, these three races A, B, and C were started 

 in a parallel series under as identical external conditions as 

 possible. At the beginning of this parallel series the generations 

 were renumbered and the beginning generation of each of the 

 races ifi this series is called No. I. Ten young females from each 



TAHLI-: II. 



K: 



Detailed history of race C throughout the first 35 generations, wliirh i 

 summarized in Table I. 



