376 THE SERVICE TREE. 
above, and downy underneath, which causes it to present a 
striking and varied appearance when ruffled by the wind. It 
is late in coming into leaf; it grows on soil of very opposite 
qualities ; it forms a shapely round-headed tree, unaffected by 
the wind, and establishes a shelter where many kinds of trees 
fail to exist. The mode of propagation and treatment suitable 
for the mountain ash is adapted to this tree, and the timber of 
both species is very similar. The varieties are propagated by 
being engrafted, using the common tree or the mountain ash 
as the stock, 
