TREES AND SHRUBS 113 
tree. It is hardy in a cold climate, grows fairly fast, attains 
a large size, and lives to a good age. This is one of the most 
famous trees of northern Europe, where there are certain 
specimens that are thought to be goo to 1000 years old. 
The Hackberry resembles the elm in general form and even 
in the shape of the leaves. It grows at about the same rate 
and is equally hardy. For the sake of variety it should be 
planted more extensively than it is, even though it is not 
distinctly superior to the elm. The dark purple berries are 
one-half to three-fourths of an inch long 
and are sweet and pleasant to the taste. 
If you are acquainted with elms and 
then for the first time come upon a hack- |g 
berry laden with these berries, you may 
say, “‘ Mr. Burbank must have played 
one of his tricks on that elm.” 
The White Birch makes a striking 
appearance on account of its chalky 
white bark, and its small leaves and 
slender twigs produce a light and airy 
effect. A clump made up of birches 
and evergreens is very attractive. The 
birch is hardy in the coldest climate and 
can withstand considerable drought. Many of the so-called 
white birches in the Northwest are the paper or canoe birch, 
which is native in this section of the country. 
The Cut-Leaf Weeping Birch has slender and gracefully 
drooping twigs, delicately cut foliage, and white bark, that 
make it a beautiful lawn tree. It is very hardy, but is more 
easily affected by drought than the common white birch. 
The Mountain Ash is another favorite for the lawn, being 
especially useful where a tree of small size is desired. It 
WHITE BIRCH 
