VI] DEVELOPMENT OF FORM 87 



A very slight alteration of Fig. 33, chiefly consisting in 

 a tendency to an outward curvature, or an approach to a 

 pendant condition of the tips of the branches, gives us 

 Fig. 38, a state of affairs realised in the Wych Elm. x 



As a last example of this class of branch analysis, I 



Fig. 37. 



take the case of a sapling such as that in the diagram 

 (Fig. 39). It is, as before, in the pyramidal stage common 

 to so many young trees, and its branches are again 

 alternate and spirally disposed ; but it differs in the wide 

 angle of divergence of the laterals on the stem. The 

 transition to the stage figured in 40 is obvious, and such 

 a condition is to be seen in middle-aged Planes. Here 



