BEHAVIOR OF A GREENING TREE 



251 



ing, iii the fall of 1890 it looked like Fig. 168. 

 In the winter of 1890-1 it was pruned, as shown 

 in Fig. 169. The tree stands in rich soil and 

 has made a heavy growth. As the top begins 



168. Greening tree of two 

 seasons' growth (1890). 



169. The same 

 pruned. 



to expand, the apparent length of the trunk 

 decreases, and in the fall of 1892 the tree looked 

 as shown in Fig. 170 ; that is, tops which 

 may appear to be very high when trees are 

 young may appear to be low when the trees have 



