176 



GERMINATION 



As regards the comparative thickness of the main leads 

 of the Oak, the Ivy and our last two illustrations the respec- 

 tive sizes of the tree and plants must be taken into considera- 

 tion. A fairer comparison would be with Cherry Apples. 



Cherry Appi,es — in Parallel. 

 And Horse Chestnut leaves, both of which are in Parallel. 



Horse-Chestnut Leaves — in Parallel. 



The thinner line in Figure 120 is a pin. Beneath it is 

 the stalk upon which the leaves and fruit are borne, and 

 it is certainly thicker than those of the Acorns and Ivies. 



