VI] 



DEVELOPMENT OF FORM 



81 



But now let us see how easily the whole shape of the sym- 

 metrical crown of Ficr. 26 may be altered by merely directing 

 the energy of growth principally, but not entirely, into 

 the inwardly directed shoots. This has been done in the 

 diagram (Fig. 29), which is again simply Fig. 26, treated 



Fi<r. 28. 



as described, the only further change introduced being the 

 stoppage of the terminal buds of the stem and of most of 

 the twigs at an early stage of their development, so that 

 the tips now appear to be dichotomously branched. Not 

 only is the whole contour of the crown altered from pyra- 



6 



w. V. 



