CHAPTER XVII ON THE THEORY OF TRANSFORMATIONS, OR THE COMPARISON OF RELATED FORMS

the rate of growth may be assumed to increase symmetrically. Precisely such a case is furnished us in a leaf of an ordinary dicotyledon. The leaf of a {732} typical monocotyledon〔such as a grass or a hyacinth, for instance〔grows continuously from its base, and exhibits no node or 〜point of arrest.〝 Its sides taper off