THE YOUNG PLANT. II 



thin, yet it is made up of different layers, two skins with softer 

 layers between. 



Draw the leaves of all the different forest and shade trees found in 

 your locality. 



The new leaves of spring and early summer are green; as 

 summer advances they change in color somewhat, and in the 

 fall the green turns to brown or yellow or red. The young 

 shoots also are green in color at first, becoming duller and 

 darker in color as they become older and stiffer. But observe 

 the many different shades of green in the leaves of different 

 kinds of trees even different kinds of maples show tints that 

 slightly vary. Even the two sides of the same leaf are not of 

 the same shade. This can be seen on a windy day when the 

 wind blows the leaves over. 



What causes the green color ? Place a small piece of board 

 on the green grass ; after a few days lift the board and observe 

 that the grass under it has become paler in color, has been 

 bleached out. Leave the board off and the grass will soon 

 become green again. When potatoes start to grow in a dark 

 cellar their sprouts are white, the tips grow towards the light, 

 and if they reach direct sunlight they become green. We 

 conclude from the above that the sunlight in some way or 

 other is the cause of the green color in the leaves. (The 

 name chlorophyl^ applied to the green-colored matter in the 

 leaf, means " leaf green.") 



Why are the roots not green like the leaves ? 

 Are evergreens of the same color in winter as in summer ? 

 Why is the growth of trees less and less, or more stunted, as we go 

 farther north ? 



When do evergreens shed their leaves ? 



Compare the cones of different evergreens. 



Where do we find the most evergreen trees, and why ? 



Where the most deciduous ? 



