PLANTING AND CARE OF TREES 81 



a number of native species. The table is based upon the behavior 



of saplings which in tlie beginning were three inches in diameter. 



It is estimated that in 20 years they should attain the diameter 



indicated in the table : — 



Silver Maple 21 inches 



White Elm 19 



Sycamore 18 " 



Tulip Tree 18 



Linden 17 



Catalpa 16 



Eed Maple 16 



Ailanthus 16 " 



Cucumber Tree 15 " 



Chestnut 14 



Common Locust 14 " 



Sugar Maple .13 " 



Horse-chestnut 13 " 



Honey Locust 13 " 



Eed Oak 13 " 



Pin Oak 13 " 



Scarlet Oak 13 



White Ash 12 



White Oak 12 



Hackberry 10 " 



MUNICIPAL CONTROL OF SHADE TREES 



There are many reasons why the planting and care of shade trees 

 should be placed in the hands of municipal authorities. If the 

 work is left to the property holders the streets will lack uniformity 

 and the result is usually a jumble of trees of various species, of va- 

 rious ages, and planted at various distances and in various ways, in 

 line and out of line, continuous and interrupted. Examples of 

 the result of such methods may be seen in almost any city. 



Municipal control is not a new idea as applied to shade trees, 

 but only during the past ten or fifteen years has its adoption been 

 at all general. The laws of IMassachusetts require each town and 

 city to appoint some one or more officials whose duty shall be the 

 planting and care of shade trees. Such officials are designated by 

 various titles, the more common being: Tree Warden, ^it" For- 



