Page:Excursions (1863) Thoreau.djvu/155

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THE SUCCESSION OF FOREST TREES.
147

be inferior,] the oaks were found to be much the best." "For several years past, the plan pursued has been to plant the inclosures with Scotch pines only, [a tree very similar to our pitch-pine,] and when the pines have got to the height of five or six feet, then to put in good strong oak plants of about four or five years' growth among the pines,—not cutting away any pines at first, unless they happen to be so strong and thick as to overshadow the oaks. In about two years, it becomes necessary to shred the branches of the pines, to give light and air to the oaks, and in about two or three more years to begin gradually to remove the pines altogether, taking out a certain number each year, so that, at the end of twenty or twenty-five years, not a single Scotch pine shall be left; although, for the first ten or twelve years, the plantation may have appeared to contain nothing else but pine. The advantage of this mode of planting has been found to be that the pines dry and ameliorate the soil, destroying the coarse grass and brambles which frequently choke and injure oaks; and that no mending over is necessary, as scarcely an oak so planted is found to fail."

Thus much the English planters have discovered by patient experiment, and, for aught I know, they have taken out a patent for it; but