. Annual report. Agricultural education. 1875.] SENATE—No. 99. 51 In South Hadley, Massachusetts, a sugar maple was found which had grown upon a horizontal bed of red sandstone. The tree stood upon the naked rock, over which its roots extended a few feet in three directions into the soil. One root had pushed its way under a slab of the rock, which measured more than twenty-four cubic feet, and must have weighed nearly two tons. In the course of twenty years or more, this root had developed to such a size as to raise the slab. Fig. 18. entirely from the bed rock and from the earth, so that it r
. Annual report. Agricultural education. 1875.] SENATE—No. 99. 51 In South Hadley, Massachusetts, a sugar maple was found which had grown upon a horizontal bed of red sandstone. The tree stood upon the naked rock, over which its roots extended a few feet in three directions into the soil. One root had pushed its way under a slab of the rock, which measured more than twenty-four cubic feet, and must have weighed nearly two tons. In the course of twenty years or more, this root had developed to such a size as to raise the slab. Fig. 18. entirely from the bed rock and from the earth, so that it rested wholly upon the wood. Upon examining the tree, it was evident that as it stood upon horizontal roots which rested on solid rock and had a diameter of nearly a foot, and as they had grown by an annual deposition of wood entirely around them, and as the heart, now several inches from the rock, must once have rested on it, and as the rock could not have been depressed, therefore the tree had been lifted every year by the growing wood of the outside layer. Another tree of paper birch. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Massachusetts Agricultural College; Massachusetts Agricultural Experiment Station; Massachusetts Agricultural Experiment Station. Annual report of the Hatch Experiment Station of the Massachusetts Agricultural College. Boston : [s. n. ]
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