46 BOTANY FOR BEGINNERS. [Ch. VIII. 
and this from fhe peculiarity of its situation, is always protect- 
ed from the inclemencies of the weather. 
170. That there is, in reality, a difference in the nature of 
vegetables as well as of animals, is very apparent; an orange 
tree will not form scales to protect its buds from cold; neither 
can the inost delicate tropical animal resist the rigours of a 
polar cliraate. 
171. ‘here are cases, however, in which plants, as well as 
animals change their habits. The horse-chestnut, in India, its 
native climate, unfolds its leaves to the atmosphere, without 
receiving any check in their development; in a colder cli- 
mate, the leaves, in attempting to unfold, are checked in their 
progress, degenerate into scales, and form buds. 
172. Of the bud, there are three sorts; the flower-bud, leaf- 
bud, and mized-bud. 
173. Ist. The flower-bud, is of a short round form, and con- 
tains the rudiments of one or several flowers folded over each 
other, and surrounded with scales. It is often found at the 
extremities of small short branches; this is the kind of bud 
which is employed in grafting or inoculating. This operation 
is performed by cutting into the bark of another tree, and placing 
a bud in the aperture; the sap of the tree flows to it, and forms 
around it a substance which connects the bud to itself; in this 
situation it shoots forth, and becomes a fruit-bearing branch. 
174. 2d. The leaf-bud contains the rudiments of several 
leaves without flowers; it is usually longer and more pointed 
than the flower-bud. “ 
_ 175. 3d. The mizxed-bud contains both leaves and flowers. 
In the peach we have examples of the first two divisions, the 
leaf and flower-bud being distinct; in the lilac they are enclosed 
together in the same bud. 
176. You have now seen the manner in which buds com- 
mence their existence; and how they gradually unfold them- 
selves until they become, in their turn, branches covered with 
leaves and flowers. In considering this subject, you cannot 
but have been impressed with a sense of the goodness of that 
170. Does there appear to be any difference in the nature of vege- 
‘ables ? 
171. Do plants ever change their habits? 
172. How many kinds of buds are there? 
173. Describe the flower-bud. 
274. Describe the leaf-bud. 
175. Describe the mixed-bud. 
176. What reflections arise when considering the progress of vegetae 
ble life? 
€ 
