136 



A MANUAL OF MENDEI>ISM 



he has secured three in succession which had already 

 been proved to be " butter bulls " by the daughters 

 bred to them in other herds. The first of these was 

 Dan, born in 1900, a son of Taurus IV and a cow called 



30 -1 -2 -3 -4 -5 -6 -7 -8 



August III, whose milk over seven years was of the 

 average quality of 4*16 per cent. Thus, like Professor 

 Nilsson-Ehle's wheats, Dan was the progeny of parents 

 which were above the average. The average quality 

 of the milk of the cows with which Dan was mated was 

 3"40 while that of their daughters was 3-89. Thus Dan 

 was even more effective than Taurus IV in getting 

 daughters with milk of higher quality. If the indica- 

 tion of the previous diagrams be accepted, it would 



