STRUGOLM FOB. ISXISTENGi) IN A TRBB TOP 



17 



tions where the buds were are still prominent ; and 

 these scars may often be found on branches many 

 years old. The conclusion is that the method of 

 branching of a tree depends more upon the posi- 

 tion of the buds with reference to light than it 

 does upon the position with reference to their 

 arrangement upon the twig. 



18. Let the pupil lie under a dense shade tree 

 on a summer's day and look up into the dark 

 top. He will find that the interior of the top is 

 poorly supplied 

 with leaves, and 

 that the long- 

 branches are leafy 

 at the ends. The 

 outside of the top 

 presents a wall of 

 foliage, often so ' 

 well thatched as 

 to shed the rain - 

 like a roof, but 

 the inside is com- 

 paratively bare. 

 The tree may be 

 a maple. Fig. 13 

 is the tip of a side shoot. The lower leaves 

 have stretched out their stalks in eagerness for 

 the sunlight, for the newer leaves are constantly 







Pig. 14. 

 Tip shoot of Norway maple. 



