Some Questions which they Suggest. 



49 



has in each case produced the same result. In order that 

 the leaves and flowers and fruit may be exposed to the 

 greatest amount of sun and air, and that the fruit may be 



Fio. 14. Pedicels and Capillitia of Comatricha obtusata. 



spread far and wide, it must be supposed that the tree-like 

 form has been assumed. A globe suggests itself as the 

 most natural form in which a solid mass can obtain an 



