stuiJY xi, 285 



rent fpecies of the fame genus, fome of which 

 grow at the fources of rivers, and others at the 

 place of their difcharge into the Ocean. He 

 would afterwards examine its convolvulufes, it's 

 mofles, it's miflletoes, it's fcolopendrœ, the mufh- 

 rooms of it's roots, nay, the very graflfes which 

 grow under it's (hade. He would perceive, in 

 each of it's vegetables, new elementary relations, 

 adapted to the places which they occupy, and to 

 the tree which fuftains, or Ihelters them. 



His attention might next be directed to the 

 various fpecies of animals which refort to it as a 

 habitation, and he would prefently be convinced, 

 that, from the fnaii up to the fquirrel, there is not 

 a fingle one, but what has determinate and cha- 

 racteriftic relations to the dependancies of it's ve- 

 getation. 



If the tree in queftion were growing in a foreft, 

 itfelf too of confiderable antiquity, it would, moft 

 probably, have, in it's vicinity, the tree which 

 Nature defigned mould contraft with it in the fame 

 fite, as, for example, the birch with the fir. It is 

 farther probable, that the acceffory vegetables and 

 animals of this laft, would, in like manner, form 

 a contraft with thofe of the firft. Thefe two 

 fpheres of obfervation would mutually illuminate 

 each other, and would diffufe the cleared light 



over 



