FOREST PLANTING. 13 



ilar to tulip poplar, though rather less rapid in growth. It may 

 be planted as an alternative or variant. 



Locust (Robinia pseudacacia) is in demand everywhere for 

 posts and railroad ties. The trees grow with marvelous ra- 

 pidity for a few years on any but the poorest soils, but soon slack 

 up. They are, moreover, almost invariably attacked by a boring 

 insect. Plantations should be made with a view to harvesting 

 the crop at about 15 years of age. Two thousand posts per acre 

 is a fair yield. 



Trees not recommended. A few trees entirely unfit for eco- 

 nomic planting in New Jersey are so persistently boomed that 

 their real qualities should be known. 



Catalpa. Grows very rapidly on rich, moist soil and in a 

 mild climate. In North Jersey its late growth is apt to be 

 frozen; in South Jersey only the best soils are fit. Its wood is 

 valuable only for posts and poles, being very durable, but weak. 



Black Walnut. The wood is valuable only when cut from the 

 heart of large, old trees. A tree 40 years old might be 12 inches 

 in diameter yet contain only a 4-inch cylinder of brown wood. 

 The sapwood of young black walnut is very wide, light in color 

 and unmarketable. 



Silver (White) Maple. The tree requires good soil, while its 

 wood is weak, perishable and of little value. In fact, no maple 

 is worth planting for lumber in New Jersey. 



Eucalyptus. No species is adapted to conditions in this State. 

 The quick growing kinds are as sensitive to frost as orange trees. 



