378 



LIFE ON THE EARTH 



fact, fruit trees raised from seed are not exactly like the 

 parent tree, and if trees are to be true to variety they must 

 be propagated in this way. 



Experiment 118. Examine several growing stems or twigs which 

 have buds upon them and notice how the buds are arranged. Is the 

 arrangement the same in all? If these buds grew into twigs or 

 leaves, would they shade one another ? Is there a bud at the end 

 of the twig or stem ? 



If we examine the tip of a growing stem or twig, we 

 shall find a bud. In most of the trees and shrubs of tem- 

 perate regions a terminal bud is formed at the close of 



FIGURE 116 



the growing season, and from this the shoot continues to 

 grow the following season. Buds are also found along 

 the length of the stem and branches, as was seen in Ex- 

 periment 118. These are lateral buds and, since they are 

 usually found in the axis of the leaf, at the angle formed 

 by the leaf and stem, they are called axillary. In some 

 trees the terminal buds die at the end of the growing season, 



