VII.] FRUn ^j^j 



across a month after flowering, it will be found to be three- 

 celled, with a pair of ovules in each cell. This suppression 

 of J. arts during the ripening of the fruit is very common. It 

 is, however, but one of the important changes to which it is 

 subject. 



Figs. 78, 79. Acorns of two Indian species of Oak (Querciis). 



Another change which greatly disguises the true nature of 

 the fruit is the excessive enlargement of certain parts, or 

 the alteration in texture and firmness of the layers of the 

 pericarp. 



Examine a ripe Mango. You find it borne upon a pe- 

 duncle. At the top of the peduncle there still remains a 

 scar, showing where the stamens were attached, and that the 

 calyx was inferior. A little obliquely-placed dot on the top 

 of the Mango denotes the position of the style. It must 

 follow, then, that the Mango-fruit has developed from the 

 ovary only. You cut into the pulp of the fruit, and find that 

 it encloses a hard stone. Break the stone, and the seed will 

 be found inside. The stone is a hardened inner layer of the 

 pericarp, the pulp a succulent outer layer ; both the stone 

 and the pulp which surrounds it originate from the walls of 

 the ovary. Stone-fruits, like the Mango and Jujube, are 

 called drupes. Like the small fruit-carpels of Clematis and 



H 2 



