ON THE ROOTS OF PLANTS. 81 



Thus the roots having collected and absorbed, 

 or taken in, a supply of food or nutriment, for 

 the sustenance of the plant, the next object 

 for consideration is, how, or in what manner, or 

 by what means, such food is disposed of, and 

 appropriated to the uses of the plant, and to the 

 formation of its various substances ; and this I 

 shall proceed to show is determined by the 

 leaves, stalk, and branches. 



