Any one who is at all familiar with the growth of trees in woods or groves somewhat dense, is also aware of the great difference in the external appearance between such trees and those which stand singly in open spaces. In thick woods, trees are found to have tall, slender trunks, with comparatively few branches except at the top, smooth and thin bark, and they are scantily provided with roots, but especially with the small fibres so essentially necessary to insure the growth of the tree when transplanted. Those, on the other hand, which stand isolated, have short thick stems, numerous branches, thick bark, and great abundance of root and small fibres. The latter, accustomed to the full influence of the weather, to cold winds as well as open sunshine, have what Sir Henry Steuart has aptly denominated the "protecting properties" well developed; being robust and hardy, they are well calculated to endure the violence of the removal, while trees growing in the midst of a wood sheltered from the tempests by their fellows, and scarcely ever receiving the sun and air freely except at their topmost branches, are too feeble to withstand the change of situation, when removed to an open lawn, even when they are carefully transplanted.
