ARBOR DAY. 175 



thing else. The roots are tar more sensitive to dry air 

 than are the parts above ground. No one need wonder 

 that trees carted into town with short roots exposed to dry 

 air, often fail to grow, or lead a precarious life for years. 

 Study the structure and the physiology of a tree and treat 

 it as one who always makes everything thrive which he 

 cares for. 



White Oak : How shall we care for the trees after 

 planting? 



Apple Tree (Hannah) : To set a tree so as to insure its 

 thrifty growth, place it but little deeper than it was while 

 growing. Have the soil well pulverized and pack it 

 closely about the tree. After all this trouble, do not 

 court disappointment in the slow growth or death of a 

 favorite tree, but dig or rake the ground every week or 

 two, all summer for three to five years, for a distance of 

 four feet or more each way from the tree. If this is im- 

 practicable, place a mulch of something covering the space 

 above mentioned. 



White Oak: After planting, trees sometimes become 

 too thick. What shall we do? 



Pear Tree (Andrew): A tree, like a child, is a living, 

 organized being, and keeps changing as long as life lasts. 

 It is not best merely to set as many trees as we expect to 

 remain for a life-time, but plant them more thickly, with a 

 view to removal. Here is where ninety out of a hundred 



