no 



peiiotl of removal, the art may be said to be established on 

 fixed principles ; and thus the results may be rendered as 

 certain and successfulj as the severity of the operation will 

 admit. Of the general correctness of the theory there 

 seems little doubt ; but, like every other drawn from nature, 

 it will be still further developed and improved, by observation 

 and experience. I may, however, say, after considerable ex- 

 perience, that, in park-practice at least, it admits of few mo- 

 difications, and no exceptions. 



It is both interesting and important to observe, that the 

 principles, on which this theory is founded, are the true 

 principles of General Planting, and must equally govern 

 every attempt at successful arboriculture ; I mean the anat- 

 omy of plants, and the modifying of heat and cold to their 

 various conditions and circumstances. It is a radical error 

 to suppose, as is too often done by planters and gardeners, 

 that heat is not as necessary to the infancy of a tender plant, 

 as to a new-born and helpless animal ; and that the former 

 is not as ill adapted to resist cold, and an early and undue 

 exposure to the elements, as the latter. The tree, as well 

 as the animal, is an organized being endued with life, al- 

 though its conditions of existence, internal and external, are 

 differently modified : But, the striking analogy subsisting 

 between them should be the guide of the planter's practice, 

 and should never be absent from his mind. It is owing to 

 this utter vmacquaintance with vegetable physiology, which 

 prevails among landowners, that the Dl success of too many 

 British plantations is to be attributed, and that Wood so sel- 

 dom thrives, or repays the planter. 



Were arboriculture, like husbandry, properly understood, 

 and were the important sciences of physiology and chemis- 

 try applied, in the former art, to the study of facts, a very 

 different return for the vast sums laid out in planting might 

 certainly be expected. In this case, I do not say, that soils 

 and climates could by any means be equahzed, but their 



