«^«^«>^ 



12 



15 



18 



Fig. 138. Grades 1-18 of white spotting as seen in Dutch rabbits. By systematic selection the average 

 grade of a race of Dutch rabbits may be gradually but peruiamntly changi-d either in a plus or in a 

 minus direction. Dutch spotting is allelomorphic with English (Fig. liS). 



