TREES THEIR PLANTING AND CARE. 49 



may be seen at the Arnold Arboretum at Jamaica Plains, 

 Mass., where, under the skilful management of Prof. C. S. 

 Sargent and Jackson Dawson, the large, more or less 



FIG. 25. AN OLD TREE HEADED BACK. 



unsymmetrical forest trees upon the grounds when the 

 planting of other trees began have become most beautiful 

 and symmetrical trees. 



Covering Wounds. 



"Whenever large branches are cut off or wounds are made 

 upon the trunk or branches, the injured part should be 

 thickly covered over with gas-tar or linseed-oil paint. This 

 will prevent very rapid decay of the wood, and when grown 

 over the injured parts will remain comparatively sound for 

 many years. 



