60 DETERIORATED CONDITION OF 



instructive. This animal is not assisted in the 

 chase by the sense of smell, but depends wholly 

 on its speed and courage, this last quality 

 being soon lost unless the race be occasionally 

 crossed with that of the bull-dog. The result 

 of the first cross makes the offspring too slow, 

 but one cross back with the grey-hound gives 

 them sufficient speed without too much lower- 

 ing the spirit they derived from the bull- 

 dog. 



The course taken with the deer-hound has 

 been produced, to a certain extent, with grey- 

 hounds, which are only required to kill hares. 

 These dogs, after a time, lose their courage, 

 and soon give up the chace when it ceases to 

 be easy. When this happens they are crossed 

 with a more vigorous race of greyhounds, and 

 sometimes with the bull-dog. The standard 

 by which the power of each of these animals is 

 measured is a fixed one, and when that power 

 declines the remedy had recourse to is ever 

 fresh blood. 



The necessity, after a time, of having re- 

 course to this, when a race of animals under 

 domestication has been too far removed from 

 one of nature, is well illustrated by Mr. Bake- 



