52 
street tree, as can be seen in Paris, where the leaves turn brown and 
fall by mid-summer, and in New York and Boston where fortunately 
it has not been generally planted. 
Among the foreign Maples of large size which have been planted in 
the eastern states only the so-called Norway Maple {Acer platanoides) 
has shown real power to flourish here. It is a smaller and less beau- 
tiful tree than the Sugar Maple, but the Sugar Maple, too, resents city 
conditions and objects to living at the seashore; and as the Norway 
Maple has proved a valuable tree for city and seashore planting it 
must be considered one of the really valuable foreign trees introduced 
into this country. 
The Old World Walnut-tree {Juglans regia), sometimes called English 
or Persian Walnut, although it is a native of China, is a handsomer 
and more valuable tree than any of the American Walnut-trees, but 
unfortunately it is doubtfully hardy in the northeastern states and it 
will probably never grow to such a large size here or produce the great 
crops of nuts and the timber which make this such a useful tree in 
many parts of the world. 
Another of the great trees of the world, the Gingko, flourishes in 
New England as well as it does in eastern Asia or Europe. It is the 
only survivor of a race which was once widely spread over the north- 
ern hemisphere. It is long-lived and able to support extremes of heat 
and cold, and grows equally well in -Massachusetts, Georgia and Cali- 
fornia. The Gingko has been largely planted in the city of Washing- 
ton, but in other parts of the United States the beauty of the tree 
when it gets beyond the juvenile state is not sufficiently understood. 
Pseudolarix is another Chinese tree which is alone in its class, and 
although discovered only seventy years ago it has been long enough in 
this country to show that it is perfectly able to adapt itself to the 
Massachusetts climate. This is surprising for the home of Pseudolarix 
is on low mountain slopes not far from the coast and south of the 
Yangtse River. The European Larch, although less picturesque than 
the Larch of northeastern North America, is a larger and more valu- 
able tree, and experience with it in New England shows that it is a 
tree which can be depended on and grows here to a large size. 
It appears, therefore, from the experience gained in Massachusetts 
during a long period that only the following deciduous-leaved trees of 
large size have proved themselves valuable for general planting, for 
ornament and timber, in the northeastern states: the Gingko, the Pseu- 
dolarix, the European Larch, three species of Poplar, two of Willows 
and their hybrids, the Cercidiphyllum, the White Mulberry, the Ailan- 
thus, the European Beech, one European Elm, one Birch, three Lindens, 
the European Horsechestnut, and the Norway Maple, nineteen in all. 
