34 OF M U L E S. 



between kindred fpecies, and another kindred 

 ftill better known, that of different races in the 

 fame fpecies ? Does not a race, like the mixed 

 fpecies, proceed from an anomalous individual, 

 which lorms the original ftock ? In the dog fpe- 

 cies, there is, perhaps, a race fo rare, that it is 

 more difficult to procreate than the mixed fpecies 

 proceeding from the afs and mare. How many 

 queflions does this fubjed admit of; and how 

 few of them are we in a condition to folve ? 

 How many fads muft be dlfcovered before we 

 can even form probable conjectures ? However, 

 inflead of being dlfcouraged, the philofopher 

 ought to applaud Nature, even when fhe is moft 

 myfterious, and to rejoice that, in proportion as 

 he removes one part of her veil, (he exhibits an 

 immenfity of other objeds, all worthy of his 

 refearches. For, what we already knov/ ought 

 to point out what may dill be known. There 

 is no boundary to the human intelled. It ex- 

 tends in proportion as the unlverfe is difplayed. 

 Hence man can and ought to attempt every thing : 

 He wants nothing but time to enable him to ob- 

 tain univerfal knowledge. By multiplying his 

 obfervatlonSihe might forefee all the phaenomcna 

 and all the events of Nature with equal certain- 

 ty, as if he deduced them from their immediate 

 caufes : And what enthufiafm can be more par- 

 donable, or rather more noble, than to be- 

 lieve that man is capable, by his labours, to 



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