40 



PEDIGREE No. 1, 



Or, liuu-brccding l)ack to Siic. 

 a = 506 



25 a b 



'lo b a 



2nd Generation. 



a = 25 b a 



VI (C b 



12 b a'' 



3rd Generation. 



a - lib a' 

 C a' b C b a- 



4th Generation. 



a = Cyb a' 



Sa'b 



3 b a' 



PEDIGREE No. 3, 



Or, Progeny mth Progeny. 



« = 50 & (all whole 



, ' , [sisters). 



25 a 6 26 b a 



2nd Generation. 



ah — 26 b a 



12 a' b'' 



\2b' 



3rd Generation. 



a^ b^ = 12 V~ a" 



6a'b' 



6 b' 



4th Generation. 



3 a'^ b'' 



3 b'' a'« 



If Pedigree Ko. 1 be an instance of in- 

 and-in breeding, this is not. And yet 

 these two systems, so utterly opposed in 

 principle, come under the present nomen- 

 clature of " in-and-in breeding" ! ! 



PEDIGREE No. 2, 



Or, line-broeiling Ijack to Maternal 

 line. 

 a = 50 b (all whole 



f ' [sisters.) 



25 a b 25 b a 



2nd Generation. 



a b = 50 b 



25 a b' 



25 b' a 



3rd Generation. 



a b- = 50 b 



25 a b' 



26 b' a 



4th Generation. 



a b' = 50 /> 



25 a 6^ 



25 // a 



PEDIGREE No. 4, 



Fathers with Daughters, 

 Or, No. 1 re-stated (the Ewes not 



being Sisters). 

 To save trouble, those only are taken who 

 are supposed to have female offspring — 

 except in the last, where b a^ has a ram- 

 lamb. 



a = 6 a — c a = d a=e 



U U k k 



b a c a da e a 



2nd Generation. 



a = ha a = ca a = da a = e.a 



L k i. i. 



ba^ c a^ d a^ e a^ 



3rd Generation. 



a=h a^ a=ca'^ a=da^ a = ea? 



i. U L L 



h a^ c a^ d a^ e a^ 



4th Generation. 



a — ba^ a=ca^ a = da^ a—ea^ 



a* 6 ca"^ da* ea* 



The fact of the ewes not being sisters does 



not affect the result which is, to breed 



back to a without intermixture. 



