STREET TREES. 31 



dead by developing winter buds into foliage that is apparently 

 normal. 



AYheii a tree is dead remove it, and before planting another 

 in its place change the soil or freshen it as directed above. 



Fig. 13. How lack of system gives a poor effect. Trees of all kinds, 

 shapes and conditions. Contrast Figs. 1 and 4. 



ELECTRIC WIRES. 



Contrary to the common belief electric wires Ra reiy 

 are rarely directly harmful to trees. They are harmful - 

 objectionable chiefly because the workmen who look after 

 them are careless or indifferent and do unnecessary damage. 

 The current in a telephone wire is too weak to be injurious 

 under any circumstances, while a lighting wire 

 caiTying an alternating current will injure the 

 living tissue of a tree only when wet weather rents - 

 and the loss of insulation make possible a close contact. Most 

 of the injury done to trees comes when a high tension direct 

 current escapes, as from a trolley feed wire, and burns the 

 tree at the point of contact or is grounded through its trunk. 



