called Fox Island, and one fine densely wooded island surrounded by deep water and overrun by grape vines, which looked like a mass of verdure and of flowers cast upon the waves, we named Grape Island. From Ball's Hill to Billerica meeting-house, the river was still twice as broad as in Concord, a deep, dark, and dead stream, flowing between gentle hills and sometimes cliffs, and well wooded all the way. It was a long woodland lake bordered with willows. For long reaches we could see neither house nor cultivated field, nor any sign of the vicinity of man. Now we coasted along some shallow shore by the edge of a dense palisade of bulrushes, which straightly bounded the water as if clipt by art, reminding us of the reed forts of the East Indians, of which we had read; and now the bank slightly raised was overhung with graceful grasses and various species of brake, whose downy stems stood closely grouped and naked as in a vase, while their heads spread several feet on either side. The dead limbs of the willow were rounded and adorned by the climbing mikania, mikania scandens, which filled every crevice in the leafy bank, contrasting agreeably with the gray bark of its supporter and the balls of the button-bush. The water willow, salix Purshiana, when it is of large size and entire, is the most graceful and ethereal of our trees. Its masses of light green foliage, piled one upon another to the height of twenty or thirty feet, seemed to float on the surface of the water, while the slight gray stems and the shore were hardly visible between them. No tree is so wedded to the water, and harmonizes so well with still streams. It is even more graceful than the weeping willow, or any pendulous trees, which dip their branches in the stream instead of being buoyed up by it. Its limbs curved outward over the sur-
