150 



LEAVES 



s 



130. LEAVES 



Object. To find out the 

 relation of fomn to tlte 

 framework of leaves. 



Apparatus. Leaves of (a) 

 beech or elm, and (6) maple 

 or ivy. 



Method. These leaves 

 represent the two types of 

 net- veined leaves, known as 

 feather-veined and palmate- 

 veined. 



Lay the leaves down and 

 compare their system of 



FIG. 61. Feather-veined leaf . 



veining and the gen- 

 eral outline. How 

 many principal veins 

 has the ivy or the 

 maple? How many 

 points to the outline ? 

 Does the number of 

 principal veins corre- 

 spond in any way to 

 the number of lobes 

 of the blade? In the 

 beech and elm does 

 the shape have any 



FIG. 62. Palmate-veined leaf . 



