22 THE TREES OF AMERICA. 



We have been thus particular in giving the result of Mr. Tudor's experiments, 

 as we look upon them as of the highest importance. He has demonstrated, as 

 he says, " that trees may be made to grow close to old ocean, spite of his anger 

 and his storms ; " and he has also shown that other vegetation can be as success- 

 fully cultivated in the same vicinity, if only sheltered by the guardian trees. 

 Thus thousands of acres of barren land may be converted into fruitfol fields, and 

 vast populations be supported upon soil now deemed valueless. Certainly, by 

 his experiments, it seems to us, he has conferred the greatest boon upon the 

 race, and that, like Evelyn, he wUl receive the thanks of the world. His method 

 of transplanting, etc., we shall give in another part of this work. 



There are others, also, to whom we are more or less indebted for the shade, 

 and verdure, and tree music of Nahant. Mr. Stephen Codman was one of the 

 earliest tree planters here. It is said of him, as no mean praise, he was a great 

 lover of trees. Mr. Charles Amory has also both fruit and forest trees of his 

 own planting. The Hood family, the Johnsons, Mr. Whitney, Mr. Bryant, and 

 Mr. Hammond, — and amongst the ladies, Mrs. Bulfinch and Mrs. Colby, — have 

 aided in producing the change from barrenness to comparative fertility which 

 Nahant now presents. They deserve, as they wiU. receive, the thanks of the 

 thousands who, from year to year, come here to visit old ocean, as well as a 

 more lasting memorial in the general interest and value of the facts they have 

 aided to establish. 



There are various ways in which climate is influenced by the presence or 

 absence of trees, and the success of the agriculturist often depends entirely upon 

 their protection. They yield vital heat, and thus, in some degree, equalize the 

 temperature of the air ; they draw moisture from the earth, and give it off, by 

 evaporation, from the surface of an infinitude of leaves. They protect the tender 

 plant from the violence of the winds, which would, in this manner alone, in 

 many instances, destroy the labors of the husbandman. By obstructing the 

 winds, they prevent the rapid abstraction of heat and moisture, and perhaps in 

 this manner render their most important services. They afford shelter and 

 breeding places for the birds, without whose aid in destroying insects and 

 worms we should try in vain to produce many important vegetables. This last 



