44 



COCOA 



CHAP. 



another arrangement of the leaves, namely, according to 

 the formula \. This means that each leaf is always 

 situated on the other side of the branch from that on 

 which are found the previous leaf and the next one, the 

 leaves being thus placed on the branches in two rows, 

 standing alternately on the left and on the right side 

 (Figs. 5, 6). Moreover, the leaves on the branches 

 are always placed more or less in a horizontal 

 plane. 



The arrangement of the leaves on the watershoot is 

 the same as on the stem, namely f (Fig. 4). 



Like most tropical trees, the cocoa puts forth new 



FIG. 7. A cocoa leaf. 

 a, Articulation. 



shoots several times in the course of the year, but the 

 new shoots are not always formed on all the twigs or on 

 the same twigs, and generally speaking a twig has on 

 an average only two shoots every year. Each shoot 

 ends its growth by the formation of a terminal bud, 

 which is enclosed in its scales. When this bud again 

 develops into a new shoot, the scales fall off and leave 

 at the base of the young shoot a number of closely 

 standing scars, which form together the so - called 

 " ring-scar," the boundary between the two shoots. 



In full - grown trees of normal growth generally 

 the third-eldest shoots drop their leaves (Fig. 6), but 

 on young trees the leaves remain longer. 



A peculiarity of the cocoa leaf is the presence of 

 two articulations at the base and at the top of the leaf- 



