s 



FIRST LESSONS WITH PLANTS 



Some trees (as pines and spruces) continue to grow from the terminal 

 bud, but most plants soon lose the terminal bud. 



III. THE STRUGGLE FOR EXISTENCE IN A 

 TREE TOP 



10. We have seen, in all the foregoing exam- 

 ples, that every twig bears more buds than can 

 hope to find a chance to grow. Fig. 4 is an 



FIG. 4. 

 The suppression of interior buds. 



oak branch. It is seen that all the leaves are 

 borne upon the very tips of the branches. That 

 is, the interior of the space is poorly supplied with 

 foliage. If the leaves are all borne at the ends 



