94 



ar.iMPSEs IX TO i' last life 



together in a wood, wlicrc light anrl air arc in a 

 measure shut out, and compare them with other 

 specimens standing in a park in free air and hght. 

 There we see trees, growing as nature intended, with 

 grand sturch' trunks and well- 

 dcxeloped branches spreading out 

 on all sides. Lastly, in this chap- 

 ter, we may note the climbing 

 stems ; these are especially nu- 

 merous and diversified in their 

 manner of growth. Almost every 

 part is modified and adapted to 

 assist the stem to climb. The 

 common iv)- develops upon the 

 surface of its stem numerous 

 rootlets, and by their clasping 

 nature the ivy is enabled to 

 ascend the smoothest tree-trunk. 

 The hop and the con\-ol\ulus 

 climb by means of their habit of twining around 

 some rigid stem or twig. Then the peas and 

 vetches .send out little clasping tendrils in the 

 place of leaflets, whilst that lovely ornament of 

 the hedges — traveller's joy — climbs by occasionally 



C()xv()i.vri.r,>. 



