The earth must have been originally covered with forest, like the American continent in the time of Columbus. This has in all cases disappeared, as population has increased; and groves, fragments of wild-wood, small groups, and single trees have taken its place. Great Britain, once renowned for its extensive woods, now exhibits only smaller assemblages, chiefly of an artificial character, which are more interesting to the landscape-gardener than to the lover of Nature's primitive charms. Parks, belts, arboretums, and clipped hedge-rows, however useful as contributing to pleasure, convenience, or science, are not the most interesting features of wood-scenery. But the customs of the English nobility, while they have artificialized all the fairest scenes in the country, and ruined them for the eyes of the poet or the painter, have been the means of preserving some valuable forests, which under other circumstances would have been utterly destroyed. A deer-forest belonging to the Duke of Athol comprises four hundred thousand acres; the forest of Farquharson contains one hundred and thirty thousand acres; and several others of smaller extent are still preserved as deer-parks. Thus do the luxuries of the rich tend, in some instances, to preserve those natural objects of which they are in general the principal destroyers.
Immense forests still overspread a great part of Northern Russia, through which it has been asserted that a squirrel might traverse hundreds of miles, without touching the ground, by leaping from tree to tree. Since the general adoption of railroad travelling, however, great ravages have been made in these forests, and not many years will be required to reduce them to fragments. In the South of Europe a great part of the territory is barren of woods, and the climate has suffered from this cause, which has diminished the bulk of the streams and increased the severity of droughts. But Nature has established a partial remedy for the evil arising from the imprudent destruction of forests, in lofty and precipitous mountains, that serve not only to perpetuate moisture for the supply of rain to the neighboring countries, but contribute also to preserve the timber in their inaccessible ravines. Were it not for this safeguard of mountains, the South of Europe would ere this have become a desert, from the destruction of its forests, like Sahara, whose barrenness was anciently produced by the same cause.
Most of the territory of North America is still comparatively a wilderness; but in the United States the forests have been so extensively invaded, that they seldom exhibit any distinct outlines, and few of them possess the character of unique assemblages. They are but scattered fragments of the original forest, through which the settlers have made their irregular progress from east to west, diversifying it with roads, farms, and villages. The recent clearings are palisaded by tall trees, exhibiting a naked outline of skeleton timber, without any attractions. It is in the old States only that we see anything like a picturesque grouping of woods; and here, the absence of art and design, in the formation and relative disposition of these groups, gives them a peculiar interest to the lover of natural scenery. There is a charm, therefore, in New-England landscape, existing nowhere else in equal degree; but this is rapidly giving place to those artificial improvements that are destined to ruin the face of the country, which owes its present attractions to the spontaneous efforts of Nature, modified only by the unartistic operations of a simple agriculture.
Travelling in a forest, though delightful as an occasional recreation, is, when continued many hours in succession, unless one be engaged in scientific researches, very monotonous and wearisome. Even the productions of a forest are not so various as those of a tract in which all the different conditions of wildness and culture are intermingled. A view of an unbroken wilderness from an elevation is equally monotonous. Wood must be blended with other forms of landscape, with pasture and tillage, with roads, houses, and farms, to convey to the mind the most agreeable sensations. The monotony of unbroken forest-scenery is partially relieved in the autumn by the mixed variety of tints belonging to the different trees; but this does not wholly subdue the prevailing expression of dreariness and gloom.
Nothing can surpass the splendor of this autumnal pageantry, as beheld in the Green Mountains of Vermont and Western Massachusetts, in the early part of October. This region abounds in Sugar-Maples, which are very beautifully tinted, and in a sufficient variety of other trees to delight the eye with every specious hue. A remarkable appearance may always be observed in Maples. Some trees of this kind are entirely green, with the exception perhaps of a single bough, which is of a bright crimson or scarlet. Sometimes the lower half of the foliage will be green, while the upper part is entirely crimsoned, resembling a spire of flame rising out of a mass of verdure. In other cases this order is reversed, and the tree presents the appearance of a green spire rising out of flame. We see no end to the variety of these apparently capricious phenomena, which some have explained by supposing the colored branches to be affected with partial disease that hastens their maturity: but this can hardly be admitted as the true explanation, as such appearances exist when no other symptoms of malady can be discovered.
So much has been said and written of late in regard to the tints of autumn leaves, that the writer of this cannot be expected to advance anything new concerning them. Let me remark, however, that these beautiful tintings are not due to the action of frost, which is, on the contrary, highly prejudicial to them, as we may observe on several different occasions. If, for example, a frost should occur in September of sufficient intensity to cut down the tender annuals of our gardens,—after this, when the tints begin to appear, the outer portion of the foliage that was touched by the frost will exhibit a sullied and rusty hue. The effects of these early frosts are seldom apparent while the leaves are green, except on close inspection; for a very intense frost is required to sear and roll up the leaves. Early autumnal frosts seldom do more than to injure their capacity to receive a fine tint when they become mature.
The next occasion that renders the injurious effects of frost apparent is later in the season, after the tints are very generally developed. Every severe frost that happens at this period impairs their lustre, as we may perceive on any day succeeding a frosty night, when the woods, which were previously in their gayest splendor, will be faded to a duller and more uniform shade,—as if the whole mass had been dipped into a brownish dye, leaving the peculiar tints of each species dimly conspicuous through this shading. The most brilliant and unsullied hues are displayed in a cool, but not frosty autumn, succeeding a moderate summer. Very warm weather in autumn hastens the coloring process, and renders the hues proportionally transient. I have known Maple woods, early in October, to be completely embrowned and stripped of their leaves by two days of summer heat. Cool days and nights, unattended with frost, are the favorable conditions for producing and preserving the beauty of autumnal wood-scenery.
The effects of heat and frost are not so apparent in Oak woods, which have a more coriaceous and persistent foliage than other deciduous trees: but Oaks do not attain the perfection of their beauty, until the Ash, the Maple, and the Tupelo—the glory of the first period of autumn—have shed a great portion of their leaves. The last-named trees are in their splendor during a period of about three weeks after the middle of September, varying with the character of the season.
Oaks are not generally tinted until October, and are brightest near the third week of this month, preserving their lustre, in great measure, until the hard frosts of November destroy the leaves. The colors of the different Oaks are neither so brilliant nor so variegated as those of Maples; but they are more enduring, and serve more than those of any other woods to give character to our autumnal landscapes.
It would be difficult to convey to the mind of a person who had never witnessed this brilliant, but solemn pageantry of the dying year, a clear idea of its magnificence. Nothing else in Nature will compare with it: for, though flowers are more beautiful than tinted leaves, no assemblage of flowers, or of flowering trees and shrubs, can produce such a deeply affecting scene of beauty as the autumn woods. If we would behold them In their greatest brilliancy and variety, we must journey during the first period of the Fall of the Leaf in those parts of the country where the Maple, the Ash, and the Tupelo are the prevailing timber. If we stand, at this time, on a moderate elevation affording a view of a wooded swamp rising into upland and melting imperceptibly into mountain landscape, we obtain a fair sight of the different assemblages of species, as distinguished by their tints. The Oaks will be marked, at this early period, chiefly by their unaltered verdure. In the lowland the scarlet and crimson hues of the Maple and the Tupelo predominate, mingled with a superb variety of colors from the shrubbery, whose splendor is always the greatest on the borders of ponds and water-courses, and frequently surpasses that of the trees. As the plain rises into the hill-side, the Ash-trees may be distinguished by their peculiar shades of salmon, mulberry, and purple, and the Hickories by their invariable yellows. The Elm, the Lime, and the Buttonwood are always blemished and rusty: they add no brilliancy to the spectacle, serving only to sober and relieve other parts of the scenery.