CHAPTER X 



LEAVES 



115. The Elm Leaf. — Sketch the leafy twig of elm that is sup- 

 plied to you.^ Report on the following points : 



(a) How many rows of leaves? 



(6) How nmch overlapping of leaves when the twig is held with 

 the upper sides of the leaves toward you? Can you suggest a reason 

 for this? Are the 

 spaces between the 

 edges of the leaves 

 large or small com- 

 pared with the lea'\es 

 themselves? ^s' -■,;k 



Pull ofE a single / K^M.,,^^ 

 leaf and make a very / " "-vf^^^ 



<«> \ *" 



1 Any elm will answer ' -* * 



the purpose. Young 

 strong shoots which e.x- 

 tend horizontally are 

 best, since on these leaves 

 are most fully developed 

 and their distribution 

 along the twig appears 

 most clearly. Other good 

 kinds of leaves with 

 which to begin the study, 

 if elm leaves are not 

 available, are those of 

 beech, oak, willow, peach, cherry, apple. Most of the statements and direc- 

 tions above given would apply to any of the leaves just enumerated. If this 

 chapter is reached too early in the season to admit of suitable material being 

 procured for the study of leaf arrangement, that topic may be omitted until 

 the leaves of forest trees have sufficiently matured. 



97 



Fig. 58. Leafy Twig of Poplar 



