IN-AND-IN BREEDING. 175 



three, Sultan two, and Pope and Northampton once 

 each. Twenty-four times animals appear whose dam 

 was daughter of their sire. Seventeen of the animals 

 sold were got by the bull " Mameluke," who was " also 

 full of ' Favorite ' blood." 



In this family we find a good illustration of the 

 principle to which we have already called attention 

 that "good- milking" qualities and "good-breeding" 

 qualities are usually associated and this may safely 

 be attributed to the animals " not having been pam- 

 pered," and the inheritance of ancestral characters. 



"M. Beaudowin gives the particulars of a flock 

 of merinos, bred in-and-in for twenty-two years with- 

 out a single cross, and with perfectly successful results, 

 there being no sign of decreased fertility, and the 

 breed in other respects having been improved." 



It has been claimed that the statistics obtained in 

 asylums for the insane, the idiotic, and the deaf, dumb, 

 and blind, show that consanguineous marriages are a 

 fruitful source of this class of defects. As statistics 

 of this kind are not readily accessible to the general 



ler, the following synopsis of the reports relating 

 this subject will be of interest in this connection. 



In the examination of this class of facts, however, 

 it must be remembered that such effects, when proved 

 to exist, would be more marked in the human family, 

 where there is a high development of the intellectual 

 faculties, than among the lower animals that possess 

 an organization that is more symmetrically balanced. 



" Dr. Chazarain, a young physician of Bordeaux, 



1 Comptes-Rendus, August 6, 1862; according to "Transactions of 

 New York State Medical Society," 1869, p. 111. 



