56 THE HORSE 



The pedigree of Alphea Czar (Fig. 6) is one of 

 many which might be cited to illustrate persistent 

 inbreeding. It should be said, however, that the 

 strict meaning of the term "inbred" is not well de- 

 fined. In a general way it is used to designate the 

 mingling of the blood of animals more closely related 

 than second or third cousins. 



It will be noted that the genealogy of Moses (Fig. 

 7) traces back ten times to Terah, and that so far as 

 the record goes the ancestry of the father and mother 

 of Moses are identical, with the exception of two 

 paternal and one maternal ancestors. The fact should 

 not be overlooked, however, that there are but forty- 

 seven ancestors recorded, whereas he had in the eight 

 generations four hundred and ten ancestors, and that 

 in the last, or eighth, generation there are one hundred 

 and twenty - eight maternal ancestors, only two of 

 whom are mentioned in the record, and one hundred 

 and twenty -eight paternal ancestors, only five of whom 

 are mentioned. Stated mathematically, Moses' gene- 

 alogy in the eighth generation traces back to two hun- 

 dred and fifty -six ancestors and shows that he received 

 two two -hundred -and -fifty -sixths of his blood from 

 Haran, five two -hundred -and -fifty -sixths from Terah 

 and two-hundred and forty -nine two -hundred -and -fifty- 

 sixths from unknown and unrecorded blood. It is 

 probable, however, that the ancestors of Moses not 

 recorded were related more or less closely to those 

 which are enumerated. In the case of domestic animals, 

 the probabilities are that the unrecorded ancestors 

 were not closely related, nor is it probable that they 



