VERNATION.—LEAF-BUD. 37 
51. In early spring, before the leaves are expanded, we 
find them folded up in the buds. This is called the verna- 
tion of the leaves (from the Latin vernus, spring). In this 
condition the young leaves are closely packed in many curi- 
ous modes, which are described in the Class : 
Book, $$ 209-214. 
52. If we dissect and carefully examine a 
swelling leaf-bud in early spring, we observe 
in the midst of it a tender point of a growing 
pith, bearing and covered by many circles of 
little leaves and scales, packed as close as 
possible. Fig. 94 shows a twig with two 
buds as if split through the axis, exhibiting - 
the pith, growing point, young leaves, and 
Fig. 98. A twig, 
scales. with two lateral 
53. According to this figure.and the next ies one terminal 
ud. 
(94), buds are either terminal (¢), situated at Fig. 94. Same, 
the end of the stem or twig, or lateral (a), split through the 
situated on the side. But we must more care- '° ™™4* 
fully define the position of the lateral buds. Should we tell 
you that they are aazillary, or located in the awil of a leaf, 
you would not understand, until knowing that the ail ofa 
leaf is the upper angle between the leaf-stalk and the stem. 
(See 4, Fig. 90.) Now, remember this rule, which you may 
soon confirm by your own observation, that there is a bud at 
the termination of every stem or branch, and in the axil of 
every leaf. 
51. What is the meaning of the term vernation ? 
52. Give a careful definition of a leaf-bud. 
53. What is a terminal bud? What an axillary? Where are buds al 
ways found? 
