50 



LEAF MARGINS. 



Plate XV 



General subject Give the character of each leaf-margin in the 

 plate. What kind of leaf at fig. 1 ? Difference between 2 and 6, 2 

 and 4 How is the margin at figs. 8 and 9 how at fig. 14 ? What 

 peculiarity at fig. 13 fig. 15 ? What appearance at fig. 16 ? How 

 is tho margin at fig. 10 fig. 11 ? Is there any absolute difference 

 between these two forms ? How is the margin at fig. 7 ? What 

 leaf at page 12, and by what habit is it affected ? 



