Pruning. 261 



dies (67, 123) by inducing branching, which we ac- 

 complish by cutting back the top in proportion to the 

 slenderness of the trunk (423). 



b of the Branches. Trees expected to support heavy 

 crops of fruit, or to endure high winds, should have 



FIG. 162. Apple tree pruned with open head, to admit abun- 

 dant light. 



branches developed with special reference to strength^ 

 In such cases, several medium to small branches are 

 better able to endure the strain than a few large ones 



