SELECTION OF BROOD BITCH. 



195 



to the dog at two years old, and the other trained and run till five, 

 I should expect the produce of the former to be very superior to 

 that of the latter. The reason of this probably is, that in training, 



the organs of generation are kept as much as possible in abeyance, 

 whilst the muscular and respiratory systems are developed to the 

 highest extent of which they are capable. As instances of suc- 

 cessful brood bitches, which were themselves inferior runners, 



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