QUANTITY 



139 



which raised so many daughters in the quality of their 

 milk were very unlikely — ^judging from the run of the 

 breed as a whole — ^to have carried factors as high as 

 those carried by the best of their daughters may be 



30 -1 -2 -3 -4 -5 -6 -7 -8 -9 40 -1 -2 -3 -4 -5 -6 



taken as evidence that some of the high quality factors 

 at least are dominants. 



In a volume published two years ago — " The Prin- 

 ciples of Stock-breeding " — ^the writer of this volume 

 expressed the opinion that there were two main factors 



