LEAF-BUDS. 27 



inspection, it may nevertheless be always in- 

 ferred with confidence that they exist in such 

 situations, and may possibly be called from 

 their dormant state into life. 



Hence, wherever the scar of a leaf, or the 

 remains of a leaf, can be discovered, there it is 

 to be understood that the rudiments exist of a 

 system of life which may be, by favorable cir- 

 cumstances, called into action. 



Hence, all parts upon which leaves have ever 

 grown may be made use of for purposes of pro- 

 pagation. 



From these considerations it appears that 

 the most direct analogy between the Animal 

 and Vegetable Kingdoms is with the Polypes 

 of the former. 



Adventitious leaf-buds are in all respects like 

 regular leaf-buds, except that they are not 

 formed at the axils of leaves, but develope 

 occasionally from all and any parts of a plant. 



They are occasionally produced by roots, by 

 solid wood, or even by leaves and flowers. 



Hence, roots solid wood, or even leaves and 

 flowers may in particular cases be used as 

 means of propagation. 



But as the development of adventitious buds 

 is extremely uncertain, such means of propaga- 



