382 CONSERVATIVE ORGANS. JJLECT. VII. 



altered in form, in stems even of a few years' 

 growth. The future state of the pith, therefore., 

 varies; and is altogether regulated by the cha- 

 racter of the wood which encloses it. 



Such is the general anatomy, or, more strictly 

 speaking, phytotomy of ligneous dicotyledonous 

 stems. Almost every species of tree and shrub, 

 however, has something peculiar to itself, but 

 these are more connected with the arrangement, 

 than with the structure of the parts. 



