Contrast of evergreen and deciduous trees

The contrast of passing from a wood of deciduous trees to a wood of evergreens, must be felt by the most heedless observer; and the same sort of pleasure, though in a weaker degree, would be felt in the course of a drive, if the trees of different kinds were collected in small groups or masses by themselves, instead of being blended indiscriminately. I do not mean to make separate groves, or woods, of different trees, although that has its beauty; but, in the course of the drive, to let oak prevail in some places, beech in others, birch in a third, and, in some parts, to encourage such masses of thorns, hazels, and maple, or other brushwood of low growth, as might best imitate the thickets of a forest.