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with A, will clash or hit, and produce discordant or harmonious 

 results. The ram A in like manner has latent in him the 

 blood not of his mother, but his mother's father. But this, 

 like other maternal influence, is but temporary in its effect, 

 to be succeeded in coming generations by other temporary 

 female impressions, tbe blood he hands down permanently 

 being his father's father's father's and great-grandfather's 

 blood. 



To give the question a human significance, I believe that a 

 man hands down to his sons his father's influence, modified 

 temporarily by his maternal male blood and his wife's male 

 blood — to be modified in their turn by their mother's male 

 blood and their wife's. 



In all the pedigrees I have made out I have only treated of 

 one ram with 50 ewes. To examine the subject in the proper 

 manner, by the hypothesis of a number of rams put to a larger 

 number of ewes, would have made it too complicated for my 

 purpose. It suffices to point out that in due course the rams 

 become by the action of pedigree No. 1 brothers and half- 

 brothers, and that though their action is only in a certain 

 number of cases direct, that is to say, that of own great- 

 grandfather to own great-grand-daughter, yet if not direct, 

 it is indirectly so, and that it tends to become that of grand 

 and great -grand-uncle with their grand and great-grand-nieces. 



The whole tendency of in-and-in-breeding with sheep, owing 

 to the power of one ram to impregnate 50 females, is more 

 and more to intensify and revert to A's type. 



If these are the tendencies of in-and-in-sheep-breediug, 

 cannot the desired object be attained more effectually and 

 quickly than now ? I believe it can. 



