Trees Their Planting and Care 51 



Arnold Arboretum at Jamaica Plains, Mass., where under 

 the skilful management of Prof. C. S. Sargent and Jackson 

 Dawson, the large, more or less 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 asphaltum 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. 



Selection of Varieties 



In the selection of varieties the inexperienced especially 

 must give the matter very careful consideration. Depend- 

 ence cannot be placed on the often exaggerated descriptions 

 found in the average nurseryman's catalogue. Especially 

 is this true of new varieties, for no one can tell just how 

 they will do under differing conditions and what insects or 

 diseases may be found to destroy them as they grow toward 

 maturity; and nothing should be planted, in the main 

 features of the place at least, which has not been fully tested 

 under many varying conditions. New and untried things 

 should, if planted at all, be put where they may be replaced, 

 should they fail, without injury to the main features of the 

 grounds. , 



With the large numbers of parks, arboretums, and exten- 

 sive planting on large estates, and especially the experiment- 

 stations in all of our States, any one can learn what are 

 desirable trees and shrubs for any given locality, and there 



