FAR, far up, in the bosom of New Hampshire's granite hills, the Saco has its birth. As the mountain rill gathers strength it takes "Through Bartlett's vales its tuneful way, Or hides in Conway's fragrant brakes, Retreating from the glare of day."Now it leaves the mountains and flows through "green Fryeburg's woods and farms." In the course of its frequent turns and twists and bends, it meets with many another stream, and sends it, fuller and stronger, along its rejoicing way. When it has journeyed more than a hundred miles and is nearing the ocean, it greets the Great Ossipee River and accepts its crystal tribute. Then, in its turn, the Little Ossipee joins forces, and the river, now a splendid stream, flows onward to Bonny Eagle, to Moderation and to Salmon Falls, where it dashes over the dam like a young Niagara and hurtles, in a foamy torrent, through the ragged defile cut between lofty banks of solid rock. Widening out placidly for a moment's rest in the sunny reaches near Pleasant Point, it gathers itself for a new plunge at Union Falls, after which it speedily merges itself in the bay and is fresh water no more.