So it flows on down by Lowell and Haverhill, at which last place it first suffers a sea change, and a few masts betray the vicinity of the ocean. Between the towns of Amesbury and Newbury it is a broad commercial river, from a third to half a mile in width, no longer skirted with yellow and crumbling banks, but backed by high green hills and pastures, with frequent white beaches on which the fishermen draw up their nets. I have passed down this portion of the river in a steamboat, and it was a pleasant sight to watch from its deck the fishermen dragging their seines on the distant shore, as in pictures of a foreign strand. At intervals you may meet with a schooner laden with lumber, standing up to Haverhill, or else lying at anchor or aground, waiting for wind or tide; until, at last, you glide under the famous Chain Bridge, and are landed at Newburyport. Thus she who at first was "poore of waters, naked of renowne," having received so many fair tributaries, as was said of the Forth,

"Doth grow the greater still, the further downe;
Till that abounding both in power and fame,
She long doth strive to give the sea her name";

or if not her name, in this case, at least the impulse of her stream. From the steeples of Newburyport you may review this river stretching far up into the country, with many a white sail glancing over it like an inland sea, and behold, as one wrote who was born on its head-waters, "Down out at its mouth, the dark inky main blending with the blue above. Plum Island, its sand ridges scolloping along the horizon like the sea-serpent, and the distant outline broken by many a tall ship, leaning, _still_, against the sky."

Rising at an equal height with the Connecticut, the Merrimack reaches the sea by a course only half as long, and hence has no leisure to form broad and fertile meadows, like the former, but is hurried along rapids, and down numerous falls, without long delay. The banks are generally steep and high, with a narrow interval reaching back to the hills, which is only rarely or partially overflown at present, and is much valued by the farmers. Between Chelmsford and Concord, in New Hampshire, it varies from twenty to seventy-five rods in width. It is probably wider than it was formerly, in many places, owing to the trees having been cut down, and the consequent wasting away of its banks. The influence of the Pawtucket Dam is felt as far up as Cromwell's Falls, and many think that the banks are being abraded and the river filled up again by this cause. Like all our rivers, it is liable to freshets, and the Pemigewasset has been known to rise twenty-five feet in a few hours. It is navigable for vessels of burden about twenty miles; for canal-boats, by means of locks, as far as Concord in New Hampshire, about seventy-five miles from its mouth; and for smaller boats to Plymouth, one hundred and thirteen miles. A small steamboat once plied between Lowell and Nashua, before the railroad was built, and one now runs from Newburyport to Haverhill.

Unfitted to some extent for the purposes of commerce by the sand-bar at its mouth, see how this river was devoted from the first to the service of manufactures.