FORMS OF TREES 



43 



FIG. 34. An American elin, illustrating spreading growth 



lateral ones, but the latter are numerous and most of those 

 which survive grow into slender twigs, the delicate spray of 

 the elm and many birches is produced (Fig. 38). 



The general effect of the branching depends much upon the 

 angle which each branch or twig forms with that one from which 



