EXERCISE. 251 



sTription might be considered a prostitutioa 

 of both time and paper, we necessarily re- 

 turn to the gradations of exercise best adapted 

 to the different degrees of horses, according 

 to their various states of condition. Many 

 calculations have been made upon the pos- 

 ,sible labour and continued exertions of this 

 species, and we are by no means ignorant of 

 their great and ahnost incredible execution, 

 when broilght (for the decision of betts) into 

 trials of severity upon the turf ov' road, both 

 in speed and duration. 



The distinction to be made in the present 

 instance, is only the line between what is to 

 be considered as xii>ork, and what as the salu- 

 tary intervention of exercise ; opinions (so^ 

 near as speculative attention can form a 

 degree of consistency) admit that horses of 

 moderate qualifications and moderately sup- 

 ported, will constantly travel or journey in 

 their accustomed employment, from sixteea 

 to twenty miles everi/ dai/, through the year, 

 without the least inconvenience or bodily 

 debihtation, more than vv^hat naturally arises 

 from the increasing age of the subject. This, 

 however, being fixed as a kind of conditional 



