That same avenue is to be extended easterly till it strikes the farthest of the South Boston parks, opposite Fort Independence; and, when that is done, you will be able to drive or walk, according to your powers of walking, from the park opposite Fort independence, into the city, and across it, to Harvard University. Now that is a good deal; but they have taken another step. They propose to take the water-front of the Charles River basin; and there is nothing in Nature so beautiful, so well adapted to the needs of a city, as a park, or boulevard, or promenade, directly on a water-front, especially if that water is sea-water,--if it is brought in and carried out by two daily tides. What more beautiful, what more wholesome, what more invigorating, during the hot season of the year, than to have an open boulevard, where you can sit, or walk, or ride,--a place for the fresh sea-water of the ocean brought in pure to you every day! Well, they mean to preserve that, and give us about two hundred feet for a driveway, a saddle-horse way (a saddle-pad, I think they call it), and footpath, a place for flowers and trees, as it extends along the water-side, beginning by Leverett Street, and going out as far as Brighton. Then from there they mean to take this great Back Bay, which Dr. CLARKE properly called a natural cesspool, and keep a large part of it under water, the ocean to be let in and let out at our option, so that it can be always kept pure; and yet such a quantity of it, that it will be a sort of inland sea, where we can have regattas, and where every gentleman may keep his boat, and every boy may keep his scull; and perhaps it is just as well a boy's skull should be there as anywhere else a large part of the time. [Laughter.] Then, gentlemen, they are going to take Jamaica Pond, and have a park or driveway around the pond; then the Chestnut Hill Reservoir, that has a parkway one hundred feet in width, where you can drive or walk at your pleasure. In West Roxbury they are to have a mountain-park, which will be the largest (about five hundred acres); and it is well called a providence, because it is high, it is rocky, it has a thoroughly sylvan look, like a forest. You would feel as if you were fifty miles from Boston, if you were where you could not see the city. At the same time, it is beautiful for a park. There are very few houses there; and it is difficult to make it salable for residences. But they have selected this spot; and they are going to give us the best park of the city, and then have all these parks connected by parkways, thus making them so convenient of access, that every poor man in Boston can take his child by his hand, and for five cents a head can be carried out to any one of those parks by the railroads. [Applause.]