582 On Natural and Aloral Philosopliij, 



of these properties diflerence may arise from 

 adventitious causes. Situation, climate, cul- 

 ture, must elTect a difference of magnitude, 

 splendour and taste. 



It is impossible to resist the same conclusion 

 with respect to every species of animals, except 

 man. Here alone the question lies. Every 

 individual of each animal species discovers a 

 common character, common properties, per- 

 forms common functions, tends to a common 

 end. The qualities characteristic of one are 

 possessed by all ;* eath has its range of action 

 circumscribed within the same limits ; there is 

 a common end and purpose to which each is 

 jfitted. Each attains the summit of perfection 

 in its kind in a very sk<^rt period, and to what- 

 ever length their existence be extended, they 

 manifest no new powers, discover no new pro- 

 pensities, learn no new lesspns proper to another 

 kind; though the tutelage of man, and re- 

 peated practice under this tutelage, mav render 

 them more facile, and enable them to exhibit 

 a certain novelty, in some of the movements, 

 which constitute their general character. The 

 progeny of each is of the character of the 

 parent, and though from commixture a spurious 

 breed may be produced, yet no properties are 

 exhibited but what are found in the parents, 

 while the. incapacity of the mule to propagate 



