Description of Trees 163 



black walnut as occasionally seen in the Eastern States and 

 very frequently in the West, but it is not often seen planted 

 in avenues. It is difficult to transplant and requires a 

 rather heavy soil for its best growth, but if properly treated, 

 i.e., like the oak and chestnut, will make very beautiful 

 street-trees. It is rather slow in growth while young, and 

 requires a little care to prevent the formation of low-forked 

 main branches. It is used as a stock upon which to graft 

 the English or Persian Walnut. 



The English or Persian Wahiut (Juglans regia).—We 

 all know the Enghsh, or Persian Walnut more properly, of 

 our markets, and it is interesting to know that the tree is 

 hardy as far north as Rochester, N. Y., and produces abun- 

 dant crops of fruit. The trees in this latitude, however, are 

 grown from seed and the nuts vary somewhat in size and 

 quality, but compare well with those shipped to northern 

 markets from more southern sections of the United States. 

 The trees are upright, round-headed, much like the black 

 walnut, and are worthy a place on the la wn or in any road- 

 side avenue. 



Tulip-tree {Liriodendron tuUpifera). — This is one of 

 our most beautiful trees, and if it could be more easily 

 transplanted would be more largely used as a street- or 

 avenue-tree than it now is. The fibrous roots of this tree 

 are very succulent and easily injured by extreme pressure, 

 or by exposure to drying winds or sun, and the greatest 

 care must be exercised in transplanting it. If transplanted 

 frequently in the nursery, it may be safely moved until it 

 reaches the growth of 3 or 4 inches in diameter; otherwise 

 only young trees should be used, and more careful protec- 

 tion be given them against injury than would be required 

 for larger trees of other species. 



Cucumber Magnolia {M. aaiminata).— This beautiful 

 native tree thrives as far north as New Hampshire, but is, 



