105 



"Watcli apple buds. The scales do not elongate as in the pear 



but the flower-buds are mixed. Fig. 63 shows the expandino- cluster 



from an apple flower-bud. Four flowers will open ; and there are 



six leaves. If the buds are 



made to open in the house on 



severed twigs, the leaves do 



not grow so large before the 



flowers expand, for the twig 



does not contain sufiicient food. 



Fig. 64 is a photograph of an 



apple twig which I had in my 



window one winter's day. 



* * * 



. ^ . 63. — Oj)ening of an apj)le hud. 



Lxamme a Jiickory twig. 



The illustration (Fig. 65) shows the "ring" marking the 



beginning of the annual 

 growth. See the large 

 leaf- scars. ISTotice that 

 the terminal bud is much 

 the largest. It is the one 

 which will o-row. The 

 other buds will remain 

 dormant unless they are 

 forced into growth by the 

 death of the terminal bud 

 or by other unusual cir- 

 cumstance. Notice that 

 buds differ in size on 

 shoots of all plants : con- 

 sider that not all the buds 

 are to grow : there is 

 struggle for existence. 

 When the hickory bud 

 expands, some of the scales fall away ; but some of the inner parts 

 enlarge into leaf-like bodies, as shown in Fig. ^Q. In some hick- 

 ories these bodies become two or three inches long before they fall. 

 32 497 



64. — Apple floicers in midwinter. 



